diff --git a/pom.xml b/pom.xml
index 99e0721..a651b4c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
 	<groupId>org.ansj</groupId>
 	<artifactId>elasticsearch-analysis-ansj</artifactId>
-	<version>6.4.1.0</version>
+	<version>6.4.2.0</version>
 	<description>elasticsearch analysis by ansj</description>
 	<name>elasticsearch-analysis-ansj</name>
 	<url>http://maven.nlpcn.org</url>
@@ -21,7 +21,7 @@
 		<runSuite>**/MainTestSuite.class</runSuite>
 		<elasticsearch.plugin.name>elasticsearch-analysis-ansj</elasticsearch.plugin.name>
         <elasticsearch.plugin.java.version>1.8</elasticsearch.plugin.java.version>
-		<elasticsearch.version>6.4.1</elasticsearch.version>
+		<elasticsearch.version>6.4.2</elasticsearch.version>
 		<elasticsearch.plugin.classname>org.ansj.elasticsearch.plugin.AnalysisAnsjPlugin</elasticsearch.plugin.classname>
 	</properties>
 
diff --git a/src/main/java/org/ansj/elasticsearch/action/TransportAnsjAction.java b/src/main/java/org/ansj/elasticsearch/action/TransportAnsjAction.java
index 78a99de..b93a135 100644
--- a/src/main/java/org/ansj/elasticsearch/action/TransportAnsjAction.java
+++ b/src/main/java/org/ansj/elasticsearch/action/TransportAnsjAction.java
@@ -358,10 +358,7 @@ private AnsjResponse flushDic(AnsjRequest request) {
 
         String key = (String) params.get("key");
 
-        final SecurityManager sm = System.getSecurityManager();
-        if (sm != null) {
-            sm.checkPermission(new SpecialPermission());
-        }
+        SpecialPermission.check();
 
         try {
             if (key.startsWith(DicLibrary.DEFAULT)) {
diff --git a/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjAnalyzerProvider.java b/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjAnalyzerProvider.java
index 929f51f..54dd8e5 100644
--- a/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjAnalyzerProvider.java
+++ b/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjAnalyzerProvider.java
@@ -27,7 +27,7 @@ public AnsjAnalyzerProvider(IndexSettings indexSettings, @Assisted String name,
 
         Map<String, String> args = settings2.keySet().stream().collect(Collectors.toMap(k -> k, settings2::get));
         if (args.isEmpty()) {
-            args = AnsjElasticConfigurator.getDefaults();
+            args.putAll(AnsjElasticConfigurator.getDefaults());
             args.put("type", name());
         }
 
diff --git a/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjTokenizerTokenizerFactory.java b/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjTokenizerTokenizerFactory.java
index c7f50c0..0578ad4 100644
--- a/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjTokenizerTokenizerFactory.java
+++ b/src/main/java/org/ansj/elasticsearch/index/analysis/AnsjTokenizerTokenizerFactory.java
@@ -51,7 +51,7 @@ public Tokenizer create() {
 
         Map<String, String> args = settings.keySet().stream().collect(Collectors.toMap(k -> k, settings::get));
         if (args.isEmpty()) {
-            args = AnsjElasticConfigurator.getDefaults();
+            args.putAll(AnsjElasticConfigurator.getDefaults());
             args.put("type", this.name);
         }
 
diff --git a/src/main/java/org/ansj/elasticsearch/index/config/AnsjElasticConfigurator.java b/src/main/java/org/ansj/elasticsearch/index/config/AnsjElasticConfigurator.java
index c49d1ae..2041c71 100644
--- a/src/main/java/org/ansj/elasticsearch/index/config/AnsjElasticConfigurator.java
+++ b/src/main/java/org/ansj/elasticsearch/index/config/AnsjElasticConfigurator.java
@@ -37,8 +37,19 @@ public class AnsjElasticConfigurator {
 
     private File configDir;
 
+    private Environment env;
+
     @Inject
     public AnsjElasticConfigurator(Environment env) {
+        this.env = env;
+
+        //
+        init();
+
+        LOG.info("init ansj plugin ok , goodluck youyou");
+    }
+
+    private void init() {
         Path configFilePath = env.configFile().resolve("elasticsearch-analysis-ansj").resolve(CONFIG_FILE_NAME);
         LOG.info("try to load ansj config file: {}", configFilePath);
         if (!Files.exists(configFilePath)) {
@@ -58,18 +69,14 @@ public AnsjElasticConfigurator(Environment env) {
         }
 
         Settings settings = builder.build();
-
         path = settings.get("ansj_config");
-
         ansjSettings = settings.getAsSettings("ansj");
-
         configDir = env.configFile().toFile();
 
         flushConfig();
 
         // 进行一次测试分词
         preheat();
-        LOG.info("init ansj plugin ok , goodluck youyou");
     }
 
     private void flushConfig() {
@@ -94,10 +101,7 @@ private void flushConfig() {
     }
 
     private void initConfig(String path, boolean printErr) {
-        final SecurityManager sm = System.getSecurityManager();
-        if (sm != null) {
-            sm.checkPermission(new SpecialPermission());
-        }
+        SpecialPermission.check();
         AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
             try (BufferedReader br = IOUtil.getReader(PathToStream.stream(path), "utf-8")) {
                 String temp;
@@ -123,11 +127,7 @@ private void initConfig(String path, boolean printErr) {
     }
 
     private void initDic() {
-        final SecurityManager sm = System.getSecurityManager();
-        if (sm != null) {
-            sm.checkPermission(new SpecialPermission());
-        }
-
+        SpecialPermission.check();
         MyStaticValue.ENV.forEach((k, v) -> {
             if (k.startsWith(DicLibrary.DEFAULT)) {
                 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
@@ -195,7 +195,8 @@ private void setGlobalVar(Map<String, String> map) {
     }
 
     public void reloadConfig() {
-        flushConfig();
+        init();
+        LOG.info("reload ansj plugin config successfully");
 
         LOG.info("to remove DicLibrary keys not in MyStaticValue.ENV");
         DicLibrary.keys().removeIf(key -> !MyStaticValue.ENV.containsKey(key));
@@ -230,6 +231,6 @@ public static Map<String, String> getDefaults() {
                 .put(StopLibrary.DEFAULT, StopLibrary.DEFAULT)
                 .put(SynonymsLibrary.DEFAULT, SynonymsLibrary.DEFAULT)
                 .put(AmbiguityLibrary.DEFAULT, AmbiguityLibrary.DEFAULT)
-                .map();
+                .immutableMap();
     }
 }
diff --git a/src/main/java/org/ansj/elasticsearch/plugin/AnalysisAnsjPlugin.java b/src/main/java/org/ansj/elasticsearch/plugin/AnalysisAnsjPlugin.java
index a869fb4..bed99be 100644
--- a/src/main/java/org/ansj/elasticsearch/plugin/AnalysisAnsjPlugin.java
+++ b/src/main/java/org/ansj/elasticsearch/plugin/AnalysisAnsjPlugin.java
@@ -38,8 +38,6 @@ public class AnalysisAnsjPlugin extends Plugin implements AnalysisPlugin, Action
 
     private static final Logger LOG = Loggers.getLogger(AnalysisAnsjPlugin.class);
 
-    public static final String PLUGIN_NAME = "analysis-ansj";
-
     @Override
     public Collection<Module> createGuiceModules() {
         return Collections.singletonList(new AnsjModule());