diff --git a/crates/erp-server/migration/src/lib.rs b/crates/erp-server/migration/src/lib.rs
index 622e04a..915372c 100644
--- a/crates/erp-server/migration/src/lib.rs
+++ b/crates/erp-server/migration/src/lib.rs
@@ -34,6 +34,7 @@ mod m20260415_000030_add_version_to_message_tables;
 mod m20260416_000031_create_domain_events;
 mod m20260417_000033_create_plugins;
 mod m20260417_000034_seed_plugin_permissions;
+mod m20260418_000035_pg_trgm_and_entity_columns;
 
 pub struct Migrator;
 
@@ -75,6 +76,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20260414_000032_fix_settings_unique_index_null::Migration),
             Box::new(m20260417_000033_create_plugins::Migration),
             Box::new(m20260417_000034_seed_plugin_permissions::Migration),
+            Box::new(m20260418_000035_pg_trgm_and_entity_columns::Migration),
         ]
     }
 }
diff --git a/crates/erp-server/migration/src/m20260418_000035_pg_trgm_and_entity_columns.rs b/crates/erp-server/migration/src/m20260418_000035_pg_trgm_and_entity_columns.rs
new file mode 100644
index 0000000..5b4429c
--- /dev/null
+++ b/crates/erp-server/migration/src/m20260418_000035_pg_trgm_and_entity_columns.rs
@@ -0,0 +1,77 @@
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        // 启用 pg_trgm 扩展（加速 ILIKE '%keyword%' 搜索）
+        manager
+            .get_connection()
+            .execute_unprepared("CREATE EXTENSION IF NOT EXISTS pg_trgm")
+            .await?;
+
+        // 插件实体列元数据表 — 记录哪些字段被提取为 Generated Column
+        manager
+            .create_table(
+                Table::create()
+                    .table(Alias::new("plugin_entity_columns"))
+                    .if_not_exists()
+                    .col(
+                        ColumnDef::new(Alias::new("id"))
+                            .uuid()
+                            .not_null()
+                            .default(Expr::cust("gen_random_uuid()"))
+                            .primary_key(),
+                    )
+                    .col(ColumnDef::new(Alias::new("tenant_id")).uuid().not_null())
+                    .col(ColumnDef::new(Alias::new("plugin_entity_id")).uuid().not_null())
+                    .col(ColumnDef::new(Alias::new("field_name")).string().not_null())
+                    .col(ColumnDef::new(Alias::new("column_name")).string().not_null())
+                    .col(ColumnDef::new(Alias::new("sql_type")).string().not_null())
+                    .col(
+                        ColumnDef::new(Alias::new("is_generated"))
+                            .boolean()
+                            .not_null()
+                            .default(true),
+                    )
+                    .col(
+                        ColumnDef::new(Alias::new("created_at"))
+                            .timestamp_with_time_zone()
+                            .not_null()
+                            .default(Expr::cust("NOW()")),
+                    )
+                    .to_owned(),
+            )
+            .await?;
+
+        // plugin_entity_id 外键
+        manager
+            .create_foreign_key(
+                ForeignKey::create()
+                    .name("fk_plugin_entity_columns_entity")
+                    .from(
+                        Alias::new("plugin_entity_columns"),
+                        Alias::new("plugin_entity_id"),
+                    )
+                    .to(Alias::new("plugin_entities"), Alias::new("id"))
+                    .to_owned(),
+            )
+            .await?;
+
+        Ok(())
+    }
+
+    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        manager
+            .drop_table(
+                Table::drop()
+                    .table(Alias::new("plugin_entity_columns"))
+                    .to_owned(),
+            )
+            .await?;
+        // pg_trgm 不卸载（其他功能可能依赖）
+        Ok(())
+    }
+}