diff --git a/drizzle/0010_model_library_task_links.sql b/drizzle/0010_model_library_task_links.sql
new file mode 100644
index 0000000..b6d0bd3
--- /dev/null
+++ b/drizzle/0010_model_library_task_links.sql
@@ -0,0 +1,22 @@
+-- 车型点云库，以及任务输入对车型库文件的轻量关联
+
+CREATE TABLE IF NOT EXISTS `model_pointcloud_files` (
+  `id`        INT          NOT NULL AUTO_INCREMENT,
+  `modelId`   INT          NOT NULL,
+  `name`      VARCHAR(255) NOT NULL,
+  `fileSize`  BIGINT       NOT NULL,
+  `filePath`  VARCHAR(512) NOT NULL,
+  `createdAt` TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  INDEX `idx_model_pointcloud_files_modelId` (`modelId`)
+);
+
+ALTER TABLE `task_pointcloud_files`
+  ADD COLUMN `sourceModelPointcloudId` INT NULL
+    AFTER `sourceResultId`;
+
+ALTER TABLE `task_cad_files`
+  ADD COLUMN `source` VARCHAR(32) NOT NULL DEFAULT 'uploaded'
+    AFTER `filePath`,
+  ADD COLUMN `sourceModelCadFileId` INT NULL
+    AFTER `source`;
diff --git a/drizzle/0011_registration_source_pointcloud.sql b/drizzle/0011_registration_source_pointcloud.sql
new file mode 100644
index 0000000..2bebc0d
--- /dev/null
+++ b/drizzle/0011_registration_source_pointcloud.sql
@@ -0,0 +1,5 @@
+-- 记录配准产物来自哪个任务点云文件，用于阻止链式配准并检测重复配准
+
+ALTER TABLE `task_pointcloud_files`
+  ADD COLUMN `sourcePointcloudFileId` INT NULL
+    AFTER `sourceResultId`;
diff --git a/drizzle/schema.ts b/drizzle/schema.ts
index dbe83be..eb6c8e5 100644
--- a/drizzle/schema.ts
+++ b/drizzle/schema.ts
@@ -62,6 +62,21 @@ export const modelCadFiles = mysqlTable("model_cad_files", {
 export type ModelCadFile = typeof modelCadFiles.$inferSelect;
 export type InsertModelCadFile = typeof modelCadFiles.$inferInsert;
 
+// ─── 车型点云文件 ─────────────────────────────────────────────────────────────
+// 一个车型可维护多个通用点云文件，供任务按需关联复用
+
+export const modelPointcloudFiles = mysqlTable("model_pointcloud_files", {
+  id: int("id").autoincrement().primaryKey(),
+  modelId: int("modelId").notNull(),
+  name: varchar("name", { length: 255 }).notNull(),
+  fileSize: bigint("fileSize", { mode: "number" }).notNull(),
+  filePath: varchar("filePath", { length: 512 }).notNull(),
+  createdAt: timestamp("createdAt").defaultNow().notNull(),
+});
+
+export type ModelPointcloudFile = typeof modelPointcloudFiles.$inferSelect;
+export type InsertModelPointcloudFile = typeof modelPointcloudFiles.$inferInsert;
+
 // ─── 任务 CAD 文件 ─────────────────────────────────────────────────────────────
 // 每个任务可关联任意个 CAD 文件（与车型级 CAD 独立，用于本次检测的实测参考）
 
@@ -72,6 +87,10 @@ export const taskCadFiles = mysqlTable("task_cad_files", {
   format: varchar("format", { length: 32 }).notNull(),
   fileSize: bigint("fileSize", { mode: "number" }).notNull(),
   filePath: varchar("filePath", { length: 512 }).notNull(),
+  /** 来源：uploaded = 用户上传；model_library = 车型 CAD 库关联 */
+  source: varchar("source", { length: 32 }).default("uploaded").notNull(),
+  /** 来源车型 CAD 文件 ID（仅 model_library 时有值） */
+  sourceModelCadFileId: int("sourceModelCadFileId"),
   createdAt: timestamp("createdAt").defaultNow().notNull(),
 });
 
@@ -105,10 +124,14 @@ export const taskPointcloudFiles = mysqlTable("task_pointcloud_files", {
   name: varchar("name", { length: 255 }).notNull(),
   fileSize: bigint("fileSize", { mode: "number" }).notNull(),
   filePath: varchar("filePath", { length: 512 }).notNull(),
-  /** 来源：uploaded = 用户上传；registered = 配准算法产出 */
+  /** 来源：uploaded = 用户上传；registered = 配准算法产出；model_library = 车型点云库关联 */
   source: varchar("source", { length: 32 }).default("uploaded").notNull(),
   /** 产出该点云的分析结果 ID（仅 registered 时有值） */
   sourceResultId: int("sourceResultId"),
+  /** 生成该配准产物的原始任务点云 ID（仅 registered 时有值） */
+  sourcePointcloudFileId: int("sourcePointcloudFileId"),
+  /** 来源车型点云文件 ID（仅 model_library 时有值） */
+  sourceModelPointcloudId: int("sourceModelPointcloudId"),
   createdAt: timestamp("createdAt").defaultNow().notNull(),
 });
 
diff --git a/server/algorithmJobRunner.ts b/server/algorithmJobRunner.ts
index b5706f7..e5ce13c 100644
--- a/server/algorithmJobRunner.ts
+++ b/server/algorithmJobRunner.ts
@@ -43,6 +43,26 @@ function ensureDir(dir: string) {
   fs.mkdirSync(dir, { recursive: true });
 }
 
+function formatRegistrationTimestamp(date: Date): string {
+  const pad = (n: number) => String(n).padStart(2, '0');
+  return [
+    date.getFullYear(),
+    pad(date.getMonth() + 1),
+    pad(date.getDate()),
+    '-',
+    pad(date.getHours()),
+    pad(date.getMinutes()),
+    pad(date.getSeconds()),
+  ].join('');
+}
+
+function registeredPointcloudDisplayName(sourceName: string | undefined, derivedFile: string, resultId: number): string {
+  const sourceParsed = path.parse(sourceName || 'pointcloud');
+  const stem = sourceParsed.name || 'pointcloud';
+  const ext = path.extname(derivedFile) || sourceParsed.ext || '.ply';
+  return `${stem}_已配准_${formatRegistrationTimestamp(new Date())}_R${resultId}${ext}`;
+}
+
 /** 把 process / mock cmd 模板里的占位符替换成实际路径。 */
 function resolvePlaceholders(value: string, ctx: Record<string, string>): string {
   return value.replace(/\{(\w+)\}/g, (_, key) => ctx[key] ?? `{${key}}`);
@@ -91,7 +111,7 @@ async function gatherInputs(
     }
   }
 
-  return { task, pointCloudPaths, cadPath };
+  return { task, pointCloudRecords, pointCloudPaths, cadPath };
 }
 
 async function writeInputJson(
@@ -282,7 +302,12 @@ export async function runAlgorithmJob(
 
   try {
     await patchProgress(resultId, pluginId, 0.02, '准备输入');
-    const { pointCloudPaths, cadPath } = await gatherInputs(taskId, manifest, pointCloudFileIds, cadFileIds);
+    const { pointCloudRecords, pointCloudPaths, cadPath } = await gatherInputs(
+      taskId,
+      manifest,
+      pointCloudFileIds,
+      cadFileIds,
+    );
     const inputJsonPath = await writeInputJson(
       workDir,
       taskId,
@@ -350,13 +375,16 @@ export async function runAlgorithmJob(
             continue;
           }
           try {
+            const sourcePointcloud = pointCloudRecords[0];
+            const displayName = registeredPointcloudDisplayName(sourcePointcloud?.name, d.file, resultId);
             await db.createRegisteredPointcloudFile(
               taskId,
-              d.name ?? d.file,
+              displayName,
               absPath,
               resultId,
+              sourcePointcloud?.id ?? null,
             );
-            console.log(`[AlgorithmJobRunner] registered derived pointcloud: ${d.name ?? d.file}`);
+            console.log(`[AlgorithmJobRunner] registered derived pointcloud: ${displayName}`);
           } catch (err) {
             console.error('[AlgorithmJobRunner] failed to register derived pointcloud:', err);
           }
diff --git a/server/db.ts b/server/db.ts
index ee0f188..48b504e 100644
--- a/server/db.ts
+++ b/server/db.ts
@@ -6,6 +6,7 @@ import {
   vehicleSeries, InsertVehicleSeries, VehicleSeries,
   vehicleModels, InsertVehicleModel, VehicleModel,
   modelCadFiles, InsertModelCadFile, ModelCadFile,
+  modelPointcloudFiles, InsertModelPointcloudFile, ModelPointcloudFile,
   taskCadFiles, InsertTaskCadFile, TaskCadFile,
   inspectionTasks, InsertInspectionTask, InspectionTask,
   taskPointcloudFiles, InsertTaskPointcloudFile, TaskPointcloudFile,
@@ -229,6 +230,37 @@ export async function deleteModelCadFile(id: number): Promise<void> {
   await db.delete(modelCadFiles).where(eq(modelCadFiles.id, id));
 }
 
+// ─── 车型点云文件 ─────────────────────────────────────────────────────────────
+
+export async function createModelPointcloudFile(data: InsertModelPointcloudFile): Promise<ModelPointcloudFile> {
+  const db = await getDb();
+  if (!db) throw new Error("Database not available");
+  const result = await db.insert(modelPointcloudFiles).values(data);
+  const [row] = await db.select().from(modelPointcloudFiles).where(eq(modelPointcloudFiles.id, getMysqlInsertId(result)));
+  return row;
+}
+
+export async function listModelPointcloudFiles(modelId: number): Promise<ModelPointcloudFile[]> {
+  const db = await getDb();
+  if (!db) return [];
+  return db.select().from(modelPointcloudFiles)
+    .where(eq(modelPointcloudFiles.modelId, modelId))
+    .orderBy(desc(modelPointcloudFiles.createdAt));
+}
+
+export async function getModelPointcloudFileById(id: number): Promise<ModelPointcloudFile | undefined> {
+  const db = await getDb();
+  if (!db) return undefined;
+  const [row] = await db.select().from(modelPointcloudFiles).where(eq(modelPointcloudFiles.id, id));
+  return row;
+}
+
+export async function deleteModelPointcloudFile(id: number): Promise<void> {
+  const db = await getDb();
+  if (!db) return;
+  await db.delete(modelPointcloudFiles).where(eq(modelPointcloudFiles.id, id));
+}
+
 // ─── 任务 CAD 文件 ─────────────────────────────────────────────────────────────
 
 export async function createTaskCadFile(data: InsertTaskCadFile): Promise<TaskCadFile> {
@@ -260,6 +292,46 @@ export async function deleteTaskCadFile(id: number): Promise<void> {
   await db.delete(taskCadFiles).where(eq(taskCadFiles.id, id));
 }
 
+export async function linkTaskCadFilesFromModel(taskId: number, modelCadFileIds: number[]): Promise<TaskCadFile[]> {
+  const db = await getDb();
+  if (!db) throw new Error("Database not available");
+
+  const task = await getInspectionTaskById(taskId);
+  if (!task) throw new Error("Task not found");
+
+  const existing = await listTaskCadFiles(taskId);
+  const existingSourceIds = new Set(
+    existing
+      .map((row) => row.sourceModelCadFileId)
+      .filter((id): id is number => typeof id === "number"),
+  );
+
+  const inserted: TaskCadFile[] = [];
+  for (const id of modelCadFileIds) {
+    if (existingSourceIds.has(id)) continue;
+
+    const source = await getModelCadFileById(id);
+    if (!source) throw new Error("Model CAD file not found");
+    if (source.modelId !== task.modelId) {
+      throw new Error("Cannot link CAD file from another model");
+    }
+
+    const record = await createTaskCadFile({
+      taskId,
+      name: source.name,
+      format: source.format,
+      fileSize: source.fileSize,
+      filePath: source.filePath,
+      source: "model_library",
+      sourceModelCadFileId: source.id,
+    } as InsertTaskCadFile);
+    inserted.push(record);
+    existingSourceIds.add(id);
+  }
+
+  return inserted;
+}
+
 // ─── 检测任务 ─────────────────────────────────────────────────────────────────
 
 export async function createInspectionTask(data: InsertInspectionTask): Promise<InspectionTask> {
@@ -315,6 +387,7 @@ export async function createRegisteredPointcloudFile(
   name: string,
   filePath: string,
   sourceResultId: number,
+  sourcePointcloudFileId?: number | null,
 ): Promise<TaskPointcloudFile> {
   const fs = await import('node:fs');
   const fileSize = fs.existsSync(filePath) ? fs.statSync(filePath).size : 0;
@@ -325,6 +398,7 @@ export async function createRegisteredPointcloudFile(
     fileSize,
     source: 'registered',
     sourceResultId,
+    sourcePointcloudFileId: sourcePointcloudFileId ?? null,
   } as InsertTaskPointcloudFile);
 }
 
@@ -342,6 +416,48 @@ export async function deleteTaskPointcloudFile(id: number): Promise<void> {
   await db.delete(taskPointcloudFiles).where(eq(taskPointcloudFiles.id, id));
 }
 
+export async function linkTaskPointcloudFilesFromModel(
+  taskId: number,
+  modelPointcloudFileIds: number[],
+): Promise<TaskPointcloudFile[]> {
+  const db = await getDb();
+  if (!db) throw new Error("Database not available");
+
+  const task = await getInspectionTaskById(taskId);
+  if (!task) throw new Error("Task not found");
+
+  const existing = await listTaskPointcloudFiles(taskId);
+  const existingSourceIds = new Set(
+    existing
+      .map((row) => row.sourceModelPointcloudId)
+      .filter((id): id is number => typeof id === "number"),
+  );
+
+  const inserted: TaskPointcloudFile[] = [];
+  for (const id of modelPointcloudFileIds) {
+    if (existingSourceIds.has(id)) continue;
+
+    const source = await getModelPointcloudFileById(id);
+    if (!source) throw new Error("Model pointcloud file not found");
+    if (source.modelId !== task.modelId) {
+      throw new Error("Cannot link pointcloud file from another model");
+    }
+
+    const record = await createTaskPointcloudFile({
+      taskId,
+      name: source.name,
+      fileSize: source.fileSize,
+      filePath: source.filePath,
+      source: "model_library",
+      sourceModelPointcloudId: source.id,
+    } as InsertTaskPointcloudFile);
+    inserted.push(record);
+    existingSourceIds.add(id);
+  }
+
+  return inserted;
+}
+
 // ─── 任务分析结果 ──────────────────────────────────────────────────────────────
 
 export async function createTaskAnalysisResult(data: InsertTaskAnalysisResult): Promise<TaskAnalysisResult> {
diff --git a/server/fileRoutes.ts b/server/fileRoutes.ts
index e23e27e..6a7f584 100644
--- a/server/fileRoutes.ts
+++ b/server/fileRoutes.ts
@@ -24,7 +24,9 @@ ensureDir(TASKS_DIR);
 const diskStorage = multer.diskStorage({
   destination: (req, _file, cb) => {
     let dir: string;
-    if (req.params.modelId) {
+    if (req.params.modelId && req.path.includes('/model-pointcloud/')) {
+      dir = path.join(MODELS_DIR, String(parseInt(req.params.modelId, 10)), 'pointcloud');
+    } else if (req.params.modelId) {
       dir = path.join(MODELS_DIR, String(parseInt(req.params.modelId, 10)), 'cad');
     } else if (req.params.taskId && req.path.includes('/task-cad/')) {
       dir = path.join(TASKS_DIR, String(parseInt(req.params.taskId, 10)), 'cad');
@@ -92,6 +94,35 @@ router.post('/upload/cad/:modelId', diskUpload.single('file'), async (req, res)
   });
 });
 
+// ─── 车型点云文件上传 ────────────────────────────────────────────────────────
+// POST /api/files/upload/model-pointcloud/:modelId
+// multipart/form-data  field: file
+
+router.post('/upload/model-pointcloud/:modelId', diskUpload.single('file'), async (req, res) => {
+  const modelId = parseInt(req.params.modelId, 10);
+  if (!req.file || isNaN(modelId)) {
+    return res.status(400).json({ success: false, error: 'Missing file or modelId' });
+  }
+
+  const destPath = req.file.path;
+  const record = await db.createModelPointcloudFile({
+    modelId,
+    name: req.file.originalname,
+    fileSize: req.file.size,
+    filePath: destPath,
+  });
+
+  res.json({
+    success: true,
+    file: {
+      id: record.id,
+      name: record.name,
+      size: formatFileSize(record.fileSize),
+      filePath: record.filePath,
+    },
+  });
+});
+
 // ─── 任务 CAD 文件上传 ────────────────────────────────────────────────────────
 // POST /api/files/upload/task-cad/:taskId
 
@@ -173,6 +204,17 @@ router.get('/read/cad/:modelId/:filename', (req, res) => {
   res.sendFile(filePath);
 });
 
+// ─── 读取车型点云文件 ─────────────────────────────────────────────────────────
+// GET /api/files/read/model-pointcloud/:modelId/:filename
+
+router.get('/read/model-pointcloud/:modelId/:filename', (req, res) => {
+  const pcDir = path.join(MODELS_DIR, req.params.modelId, 'pointcloud');
+  const filePath = safeResolve(pcDir, req.params.filename);
+  if (!filePath) return res.status(403).json({ error: 'Access denied' });
+  if (!fs.existsSync(filePath)) return res.status(404).json({ error: 'File not found' });
+  res.sendFile(filePath);
+});
+
 // ─── 读取点云文件 ─────────────────────────────────────────────────────────────
 // GET /api/files/read/pointcloud/:taskId/:filename
 
diff --git a/server/routers.ts b/server/routers.ts
index 922eabd..d902c5f 100644
--- a/server/routers.ts
+++ b/server/routers.ts
@@ -14,6 +14,52 @@ import { stepParseCacheDir } from "./stepParse.js";
 import { listPlugins, getPlugin } from "./plugins/registry.js";
 import { enqueueAlgorithmJob, algorithmJobStats, cancelAlgorithmJob, cancelAlgorithmJobsByTask } from "./algorithmJob.js";
 
+async function validateRegistrationRunInput(input: {
+  taskId: number;
+  pointCloudFileIds?: number[];
+  cadFileIds?: number[];
+  allowDuplicateRegistration?: boolean;
+}) {
+  const pointCloudFileIds = input.pointCloudFileIds ?? [];
+  const cadFileIds = input.cadFileIds ?? [];
+
+  if (pointCloudFileIds.length !== 1 || cadFileIds.length !== 1) {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: "整车配准必须恰好选择 1 个点云文件和 1 个 CAD 文件。",
+    });
+  }
+
+  const pointcloudFiles = await db.listTaskPointcloudFiles(input.taskId);
+  const pointcloud = pointcloudFiles.find((row) => row.id === pointCloudFileIds[0]);
+  if (!pointcloud) {
+    throw new TRPCError({ code: "NOT_FOUND", message: "选中的点云文件不存在。" });
+  }
+  if (pointcloud.source === "registered") {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: "已配准点云不能再次作为配准输入，请选择原始点云进行配准。",
+    });
+  }
+
+  const cadFiles = await db.listTaskCadFiles(input.taskId);
+  const cad = cadFiles.find((row) => row.id === cadFileIds[0]);
+  if (!cad) {
+    throw new TRPCError({ code: "NOT_FOUND", message: "选中的 CAD 文件不存在。" });
+  }
+
+  const registeredChildren = pointcloudFiles
+    .filter((row) => row.source === "registered" && row.sourcePointcloudFileId === pointcloud.id)
+    .sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
+  if (registeredChildren.length > 0 && !input.allowDuplicateRegistration) {
+    const latest = registeredChildren[0];
+    throw new TRPCError({
+      code: "CONFLICT",
+      message: `点云「${pointcloud.name}」已有配准产物「${latest.name}」，重复配准需要确认。`,
+    });
+  }
+}
+
 export const appRouter = router({
   system: systemRouter,
 
@@ -147,6 +193,23 @@ export const appRouter = router({
       }),
   }),
 
+  // ─── 车型点云文件 ─────────────────────────────────────────────────────────
+
+  modelPointcloudFile: router({
+    list: protectedProcedure
+      .input(z.object({ modelId: z.number() }))
+      .query(async ({ input }) => {
+        return db.listModelPointcloudFiles(input.modelId);
+      }),
+
+    delete: protectedProcedure
+      .input(z.object({ id: z.number() }))
+      .mutation(async ({ input }) => {
+        await db.deleteModelPointcloudFile(input.id);
+        return { success: true };
+      }),
+  }),
+
   // ─── 任务 CAD 文件 ────────────────────────────────────────────────────────────
 
   taskCadFile: router({
@@ -163,6 +226,27 @@ export const appRouter = router({
         return { success: true };
       }),
 
+    linkFromModel: protectedProcedure
+      .input(z.object({
+        taskId: z.number(),
+        modelCadFileIds: z.array(z.number()).min(1),
+      }))
+      .mutation(async ({ input }) => {
+        try {
+          const files = await db.linkTaskCadFilesFromModel(input.taskId, input.modelCadFileIds);
+          return { success: true, files };
+        } catch (e) {
+          const message = e instanceof Error ? e.message : String(e);
+          if (message.includes("another model")) {
+            throw new TRPCError({ code: "BAD_REQUEST", message: "只能关联当前车型的 CAD 库文件" });
+          }
+          if (message.includes("not found")) {
+            throw new TRPCError({ code: "NOT_FOUND", message: "任务或 CAD 库文件不存在" });
+          }
+          throw e;
+        }
+      }),
+
     // 检查 CAD 文件是否已有三角化采样缓存（.cad_sample_cache/ 目录下存在对应 PLY）
     hasSampleCache: protectedProcedure
       .input(z.object({ cadFileIds: z.array(z.number()) }))
@@ -257,6 +341,27 @@ export const appRouter = router({
         await db.deleteTaskPointcloudFile(input.id);
         return { success: true };
       }),
+
+    linkFromModel: protectedProcedure
+      .input(z.object({
+        taskId: z.number(),
+        modelPointcloudFileIds: z.array(z.number()).min(1),
+      }))
+      .mutation(async ({ input }) => {
+        try {
+          const files = await db.linkTaskPointcloudFilesFromModel(input.taskId, input.modelPointcloudFileIds);
+          return { success: true, files };
+        } catch (e) {
+          const message = e instanceof Error ? e.message : String(e);
+          if (message.includes("another model")) {
+            throw new TRPCError({ code: "BAD_REQUEST", message: "只能关联当前车型的点云库文件" });
+          }
+          if (message.includes("not found")) {
+            throw new TRPCError({ code: "NOT_FOUND", message: "任务或点云库文件不存在" });
+          }
+          throw e;
+        }
+      }),
   }),
 
   // ─── 任务分析结果 ────────────────────────────────────────────────────────────
@@ -467,6 +572,8 @@ export const appRouter = router({
           pointCloudFileIds: z.array(z.number()).optional(),
           /** 可选：任务级 CAD 文件 ID（空/缺省 = 不传 CAD） */
           cadFileIds: z.array(z.number()).optional(),
+          /** 配准：允许同一原始点云再次生成配准产物 */
+          allowDuplicateRegistration: z.boolean().optional(),
         }),
       )
       .mutation(async ({ input }) => {
@@ -477,6 +584,9 @@ export const appRouter = router({
             message: `未注册的算法插件：${input.pluginId}`,
           });
         }
+        if (manifest.category === "配准") {
+          await validateRegistrationRunInput(input);
+        }
 
         try {
           const record = await db.createTaskAnalysisResult({
@@ -529,6 +639,8 @@ export const appRouter = router({
           pointCloudFileIds: z.array(z.number()).optional(),
           /** 可选：任务级 CAD 文件 ID（空/缺省 = 不传 CAD） */
           cadFileIds: z.array(z.number()).optional(),
+          /** 配准：允许同一原始点云再次生成配准产物 */
+          allowDuplicateRegistration: z.boolean().optional(),
           jobs: z
             .array(
               z.object({
@@ -542,6 +654,10 @@ export const appRouter = router({
       )
       .mutation(async ({ input }) => {
         const created: { id: number; pluginId: string }[] = [];
+        const hasRegistrationJob = input.jobs.some((job) => getPlugin(job.pluginId)?.category === "配准");
+        if (hasRegistrationJob) {
+          await validateRegistrationRunInput(input);
+        }
         for (const job of input.jobs) {
           const manifest = getPlugin(job.pluginId);
           if (!manifest) continue;