diff --git a/packages/plugins/collection-manager/src/collections/collections.ts b/packages/plugins/collection-manager/src/collections/collections.ts
index 6d6faa87f..1c4ae1007 100644
--- a/packages/plugins/collection-manager/src/collections/collections.ts
+++ b/packages/plugins/collection-manager/src/collections/collections.ts
@@ -44,7 +44,6 @@ export default {
       targetKey: 'name',
       foreignKey: 'collectionName',
       sortBy: 'sort',
-      constraints: true,
     },
   ],
 } as CollectionOptions;
diff --git a/packages/plugins/collection-manager/src/migrations/20220704225714-drop-foreign-keys.ts b/packages/plugins/collection-manager/src/migrations/20220704225714-drop-foreign-keys.ts
new file mode 100644
index 000000000..aa1e92a85
--- /dev/null
+++ b/packages/plugins/collection-manager/src/migrations/20220704225714-drop-foreign-keys.ts
@@ -0,0 +1,45 @@
+import { Migration } from '@nocobase/server';
+
+export default class DropForeignKeysMigration extends Migration {
+  async up() {
+    const result = await this.app.version.satisfies('<=0.7.1-alpha.7');
+    if (!result) {
+      return;
+    }
+    const transaction = await this.db.sequelize.transaction();
+    try {
+      if (this.db.inDialect('mysql')) {
+        const [results]: any = await this.db.sequelize.query(
+          `
+            SELECT CONCAT('ALTER TABLE ',TABLE_SCHEMA,'.',TABLE_NAME,' DROP FOREIGN KEY ',CONSTRAINT_NAME,' ;') as q 
+            FROM information_schema.TABLE_CONSTRAINTS c 
+            WHERE c.TABLE_SCHEMA='${this.db.options.database}' AND c.CONSTRAINT_TYPE='FOREIGN KEY';
+          `,
+          { transaction },
+        );
+        for (const result of results) {
+          await this.db.sequelize.query(result.q as any, { transaction });
+        }
+      } else if (this.db.inDialect('postgres')) {
+        const [results]: any = await this.db.sequelize.query(
+          `
+            select 'alter table '||quote_ident(tb.relname)||
+                  ' drop constraint '||quote_ident(conname)||';' as q
+            from pg_constraint c
+              join pg_class tb on tb.oid = c.conrelid
+              join pg_namespace ns on ns.oid = tb.relnamespace
+            where ns.nspname in ('public')
+            and c.contype = 'f';
+          `,
+          { transaction },
+        );
+        for (const result of results) {
+          await this.db.sequelize.query(result.q as any, { transaction });
+        }
+      }
+      await transaction.commit();
+    } catch (error) {
+      await transaction.rollback();
+    }
+  }
+}
diff --git a/packages/plugins/ui-routes-storage/src/collections/uiRoutes.ts b/packages/plugins/ui-routes-storage/src/collections/uiRoutes.ts
index b17bbdc34..de2e2cb6d 100644
--- a/packages/plugins/ui-routes-storage/src/collections/uiRoutes.ts
+++ b/packages/plugins/ui-routes-storage/src/collections/uiRoutes.ts
@@ -26,14 +26,12 @@ export default defineCollection({
       target: 'uiRoutes',
       sourceKey: 'key',
       foreignKey: 'parentKey',
-      constraints: true,
     },
     {
       type: 'belongsTo',
       name: 'uiSchema',
       target: 'uiSchemas',
       foreignKey: 'uiSchemaUid',
-      constraints: true,
     },
     {
       type: 'json',
diff --git a/packages/plugins/ui-schema-storage/src/collections/uiSchemaServerHooks.ts b/packages/plugins/ui-schema-storage/src/collections/uiSchemaServerHooks.ts
index 651c9026c..2d124c396 100644
--- a/packages/plugins/ui-schema-storage/src/collections/uiSchemaServerHooks.ts
+++ b/packages/plugins/ui-schema-storage/src/collections/uiSchemaServerHooks.ts
@@ -6,7 +6,7 @@ export default {
   // autoGenId: false,
   timestamps: false,
   fields: [
-    { type: 'belongsTo', name: 'uiSchema', target: 'uiSchemas', foreignKey: 'uid', onDelete: 'CASCADE' },
+    { type: 'belongsTo', name: 'uiSchema', target: 'uiSchemas', foreignKey: 'uid' },
     { type: 'string', name: 'type' },
     {
       type: 'string',
diff --git a/packages/plugins/ui-schema-storage/src/collections/uiSchemaTemplates.ts b/packages/plugins/ui-schema-storage/src/collections/uiSchemaTemplates.ts
index a7b37c190..06adf7630 100644
--- a/packages/plugins/ui-schema-storage/src/collections/uiSchemaTemplates.ts
+++ b/packages/plugins/ui-schema-storage/src/collections/uiSchemaTemplates.ts
@@ -30,7 +30,6 @@ export default defineCollection({
       name: 'uiSchema',
       target: 'uiSchemas',
       foreignKey: 'uid',
-      onDelete: 'CASCADE',
     },
     {
       type: 'belongsTo',