diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index a5495b37..382cac49 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -53,7 +53,6 @@ class MiaoScriptCore {
         console.i18n("ms.core.engine.disable")
         this.pluginManager.disable(this.pluginManager.getPlugins())
         this.taskManager.disable()
-        process.emit('exit', 0)
         process.exit(0)
     }
 }
diff --git a/packages/ployfill/src/node-shim.ts b/packages/ployfill/src/node-shim.ts
index 7ce0b14f..67761407 100644
--- a/packages/ployfill/src/node-shim.ts
+++ b/packages/ployfill/src/node-shim.ts
@@ -28,8 +28,9 @@ class Process extends EventEmitter {
     queueMicrotask(func: Function) {
         microTaskPool.execute(func)
     }
-    exit() {
-        microTaskPool.shutdown();
+    exit(code: number) {
+        process.emit('exit', code)
+        microTaskPool.shutdown()
     }
 }
 global.setGlobal('process', new Process(), {})
diff --git a/packages/plugin/src/decorators.ts b/packages/plugin/src/decorators.ts
index e1ebdfd6..5259d328 100644
--- a/packages/plugin/src/decorators.ts
+++ b/packages/plugin/src/decorators.ts
@@ -79,23 +79,16 @@ export function config(metadata: interfaces.ConfigMetadata = {}) {
     }
 }
 
-function stage(metadata: interfaces.ExecMetadata = {}, stage: string) {
-    return function (target: any, key: string, value: any) {
-        metadata.name = metadata.name || key
-        metadata.executor = key
-        const previousMetadata: interfaces.ExecMetadata[] = getPluginStageMetadata(target, stage)
-        Reflect.defineMetadata(METADATA_KEY.stage[stage], [metadata, ...previousMetadata], target.constructor)
+function stage(stage: string) {
+    return (metadata: interfaces.ExecMetadata = {}) => {
+        return function (target: any, key: string, value: any) {
+            metadata.name = metadata.name || key
+            metadata.executor = key
+            const previousMetadata: interfaces.ExecMetadata[] = getPluginStageMetadata(target, stage)
+            Reflect.defineMetadata(METADATA_KEY.stage[stage], [metadata, ...previousMetadata], target.constructor)
+        }
     }
 }
-
-export function load(metadata: interfaces.ExecMetadata = {}) {
-    return stage(metadata, 'load')
-}
-
-export function enable(metadata: interfaces.ExecMetadata = {}) {
-    return stage(metadata, 'enable')
-}
-
-export function disable(metadata: interfaces.ExecMetadata = {}) {
-    return stage(metadata, 'disable')
-}
+export const load = stage('load')
+export const enable = stage('enable')
+export const disable = stage('disable')
diff --git a/packages/plugin/src/loader/basic-loader.ts b/packages/plugin/src/loader/basic-loader.ts
index 80b7645c..4bc3c25d 100644
--- a/packages/plugin/src/loader/basic-loader.ts
+++ b/packages/plugin/src/loader/basic-loader.ts
@@ -11,8 +11,8 @@ export class BasicLoader implements plugin.PluginLoader {
         this.pluginRequireMap = new Map()
     }
     require(loadMetadata: plugin.PluginLoadMetadata) {
-        let metadata = loadMetadata.instance.description
-        if (metadata && metadata.type == this.type) {
+        let metadata = loadMetadata.instance?.description
+        if (metadata?.type == this.type) {
             loadMetadata.metadata = metadata
             loadMetadata.loaded = true
             this.pluginRequireMap.set(metadata.source.toString(), loadMetadata.instance)
diff --git a/packages/plugin/src/manager.ts b/packages/plugin/src/manager.ts
index 1508a25a..98b5f43b 100644
--- a/packages/plugin/src/manager.ts
+++ b/packages/plugin/src/manager.ts
@@ -56,6 +56,7 @@ export class PluginManagerImpl implements plugin.PluginManager {
                 this.loaderMap.set(loader.type, loader)
             })
             this.initialized = true
+            process.emit('plugin.initialize')
         }
     }
 
@@ -77,10 +78,12 @@ export class PluginManagerImpl implements plugin.PluginManager {
                 console.ex(error)
             }
         }
+        process.emit('plugin.scan', folder)
     }
 
     build(): void {
         this.buildPlugins()
+        process.emit('plugin.build')
     }
 
     private logStage(plugin: plugin.Plugin, stage: string) {
@@ -101,14 +104,25 @@ export class PluginManagerImpl implements plugin.PluginManager {
     }
 
     private loadPlugin(loadMetadata: plugin.PluginLoadMetadata) {
+        if (!loadMetadata) { throw new Error('loadMetadata can\'t be undefiend when loadPlugin!') }
+        if (loadMetadata.loaded) { throw new Error(`Plugin ${loadMetadata.name} is already loaded by ${loadMetadata.loader?.type}!`) }
         try {
             for (const [, loader] of this.loaderMap) {
-                if (loader.require(loadMetadata).loaded) {
-                    loadMetadata.loader = loader
-                    let metadata = loadMetadata.metadata
-                    this.metadataMap.set(metadata.name, metadata)
-                    metadata.loadMetadata = loadMetadata
-                    return metadata
+                try {
+                    if (loader.require(loadMetadata).loaded) {
+                        loadMetadata.loader = loader
+                        let metadata = loadMetadata.metadata
+                        this.metadataMap.set(metadata.name, metadata)
+                        metadata.loadMetadata = loadMetadata
+                        return metadata
+                    }
+                } catch (error) {
+                    if (global.debug) {
+                        console.console(`§6Loader §b${loader.type} §6load §a${loadMetadata.file} §cerror. §4Err: §c${error}`)
+                        console.ex(error)
+                    } else {
+                        console.warn(`Loader ${loader.type} load ${loadMetadata.file} error. Err: ${error}`)
+                    }
                 }
             }
         } catch (error) {
@@ -123,8 +137,8 @@ export class PluginManagerImpl implements plugin.PluginManager {
      * @param file java.io.File
      */
     loadFromFile(file: string, scanner = this.sacnnerMap.get('file')): plugin.Plugin {
-        if (!file) { throw new Error('plugin file can\'t be null!') }
-        if (!scanner) { throw new Error('plugin scanner can\'t be null!') }
+        if (!file) { throw new Error('plugin file can\'t be undefiend!') }
+        if (!scanner) { throw new Error('plugin scanner can\'t be undefiend!') }
         let metadata = this.loadPlugin(scanner.read(file))
         let plugin = metadata.loadMetadata.loader.build(metadata)
         this.load(plugin)
@@ -162,7 +176,7 @@ export class PluginManagerImpl implements plugin.PluginManager {
     reload(...args: any[]): void {
         this.checkAndGet(args[0]).forEach((pl: plugin.Plugin) => {
             this.disable(pl)
-            this.loadFromFile(pl.description.source, pl.description.loadMetadata.scanner)
+            this.loadFromFile(pl.description.source.toString(), pl.description.loadMetadata.scanner)
         })
     }
 
@@ -184,10 +198,11 @@ export class PluginManagerImpl implements plugin.PluginManager {
     }
 
     private checkAndGet(name: string | plugin.Plugin | undefined | any): Map<string, plugin.Plugin> | plugin.Plugin[] {
+        if (name === undefined) throw new Error(`checkAndGet Plugin can't be undefiend!`)
         if (name == this.instanceMap) { return this.instanceMap }
         if (typeof name == 'string' && this.instanceMap.has(name)) { return [this.instanceMap.get(name)] }
         if (name instanceof interfaces.Plugin) { return [name as plugin.Plugin] }
-        if (name.description || name.description.name) { return [name as plugin.Plugin] }
+        if (name.description?.name) { return [name as plugin.Plugin] }
         throw new Error(`Plugin ${JSON.stringify(name)} not exist!`)
     }
 
diff --git a/packages/spring/src/internal/scanner/mysql-scanner.ts b/packages/spring/src/internal/scanner/mysql-scanner.ts
index e1b960f6..052b9cba 100644
--- a/packages/spring/src/internal/scanner/mysql-scanner.ts
+++ b/packages/spring/src/internal/scanner/mysql-scanner.ts
@@ -14,6 +14,7 @@ export class MySQLScanner implements plugin.PluginScanner {
     type: string = "mysql"
 
     private cacheDir = 'mysql-plugin-cache'
+    private cacheFileMap: Map<string, MySQLPlugin> = new Map()
     private target: string
 
     @inject(database.DataBaseManager)
@@ -25,7 +26,14 @@ export class MySQLScanner implements plugin.PluginScanner {
         return plugins.map(p => this.read(p))
     }
     read(mysqlPlugin: MySQLPlugin): plugin.PluginLoadMetadata {
-        return { name: mysqlPlugin.name, file: fs.concat(root, this.cacheDir, `${mysqlPlugin.name}.js`), type: this.type, mysqlPlugin, scanner: this }
+        // if invoke this function from loadFromFile mysqlPlugin is a string need read from cache
+        if (typeof mysqlPlugin == "string") {
+            if (!this.cacheFileMap.has(mysqlPlugin)) { throw new Error(`this file ${mysqlPlugin} is not read from mysql-scanner. can't reload from this scanner!`) }
+            mysqlPlugin = this.cacheFileMap.get(mysqlPlugin)
+        }
+        let cacheFile = fs.concat(root, this.cacheDir, `${mysqlPlugin.name}.js`)
+        this.cacheFileMap.set(cacheFile, mysqlPlugin)
+        return { name: mysqlPlugin.name, file: cacheFile, type: this.type, mysqlPlugin, scanner: this }
     }
     load(metadata: plugin.PluginLoadMetadata) {
         if (metadata.type !== this.type) { return }