diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/parser/ProtoParser.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/parser/ProtoParser.java
index a3d5eadc..e271f5ca 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/parser/ProtoParser.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/parser/ProtoParser.java
@@ -107,7 +107,8 @@ public class ProtoParser {
                     ProtoValue pv = readValueUtilSemicolon();
                     String optionValue = pv.getValue();
                     Option option = new Option();
-                    option.setName(optionLabel).setValue(optionValue);
+                    option.setName(optionLabel);
+                    option.setValue(optionValue);
                     proto.addOption(option);
                     comments.clear();
                     break;
@@ -176,10 +177,10 @@ public class ProtoParser {
                 notSupportInnerMessage();
             } else if (Cardinality.cardinalityOf(token) != null) {
                 PbField field = parseField(Cardinality.cardinalityOf(token), null);
-                msg.addField(field);
+                msg.getFields().add(field);
             } else {
                 PbField field = parseField(Cardinality.OPTIONAL, token);
-                msg.addField(field);
+                msg.getFields().add(field);
             }
             boolean isEnd = blockEnd();
             if (isEnd) {
@@ -405,14 +406,17 @@ public class ProtoParser {
         PbField field;
         if (gType != null) {
             TypeProtobuf type = TypeProtobuf.valueOf(gType.getKeyType().toUpperCase(Locale.ENGLISH));
-            field = new MapField().setKey(type).setValue(gType.getValueType());
+            var mapField = new MapField();
+            mapField.setKey(type);
+            mapField.setValue(gType.getValueType());
+            field = mapField;
         } else {
             field = new PbField();
         }
-        field.setCardinality(cardinality)
-                .setName(fieldName)
-                .setTag(tag)
-                .setType(fieldType);
+        field.setCardinality(cardinality);
+        field.setName(fieldName);
+        field.setTag(tag);
+        field.setType(fieldType);
         field.getComments().addAll(comments);
         comments.clear();
         return field;
@@ -798,7 +802,8 @@ public class ProtoParser {
             readValueSeparator('=');
             String value = readOptionValue();
             Option option = new Option();
-            option.setName(name).setValue(value);
+            option.setName(name);
+            option.setValue(value);
             options.add(option);
             trim();
         }
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/MapField.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/MapField.java
index 0841dec2..7b93234e 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/MapField.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/MapField.java
@@ -23,35 +23,19 @@ public class MapField extends PbField {
     private TypeProtobuf key;
     private String value;
 
-    /**
-     * @return the key
-     */
     public TypeProtobuf getKey() {
         return key;
     }
 
-    /**
-     * @param key the key to set
-     * @return
-     */
-    public MapField setKey(TypeProtobuf key) {
+    public void setKey(TypeProtobuf key) {
         this.key = key;
-        return this;
     }
 
-    /**
-     * @return the value
-     */
     public String getValue() {
         return value;
     }
 
-    /**
-     * @param value the value to set
-     * @return
-     */
-    public MapField setValue(String value) {
+    public void setValue(String value) {
         this.value = value;
-        return this;
     }
 }
\ No newline at end of file
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Option.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Option.java
index 3901a0e0..ec00e87e 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Option.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Option.java
@@ -27,28 +27,19 @@ public class Option {
      */
     private String value;
 
-    public Option setValue(String value) {
-        this.value = value;
-        return this;
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
     }
 
     public String getValue() {
         return value;
     }
 
-    public Option setName(String name) {
-        this.name = name;
-        return this;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public static boolean getBoolean(String value) {
-        if (value == null || value.isEmpty()) {
-            return false;
-        }
-        return "true".equalsIgnoreCase(value) || "t".equalsIgnoreCase(value);
+    public void setValue(String value) {
+        this.value = value;
     }
 }
\ No newline at end of file
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/PbField.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/PbField.java
index 67efd1d1..6b80d8a2 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/PbField.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/PbField.java
@@ -89,84 +89,36 @@ public class PbField {
     private List<String> comments = new ArrayList<>();
 
 
-    /**
-     * 消息属性的规则
-     *
-     * @return the cardinality
-     */
     public Cardinality getCardinality() {
         return cardinality;
     }
 
-    /**
-     * 消息属性的规则
-     *
-     * @param cardinality the cardinality to set
-     * @return
-     */
-    public PbField setCardinality(Cardinality cardinality) {
+    public void setCardinality(Cardinality cardinality) {
         this.cardinality = cardinality;
-        return this;
     }
 
-    /**
-     * 消息属性名称
-     *
-     * @return the name
-     */
     public String getName() {
         return name;
     }
 
-    /**
-     * 消息属性名称
-     *
-     * @param name the name to set
-     * @return
-     */
-    public PbField setName(String name) {
+    public void setName(String name) {
         this.name = name;
-        return this;
     }
 
-    /**
-     * 消息属性值的类型
-     *
-     * @return the type
-     */
     public String getType() {
         return type;
     }
 
-    /**
-     * 消息属性值的类型
-     *
-     * @param type the type to set
-     * @return
-     */
-    public PbField setType(String type) {
+    public void setType(String type) {
         this.type = type;
-        return this;
     }
 
-    /**
-     * 属性的顺序标记一个消息内不允许重复
-     *
-     * @return the tag
-     */
     public int getTag() {
         return tag;
     }
 
-    /**
-     * 属性的顺序标记一个消息内不允许重复
-     *
-     * @param tag the tag to set
-     * @return
-     */
-    public PbField setTag(int tag) {
+    public void setTag(int tag) {
         this.tag = tag;
-        return this;
     }
 
     public List<String> getComments() {
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/ProtoMessage.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/ProtoMessage.java
index c7c355ac..e7fb3e4f 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/ProtoMessage.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/ProtoMessage.java
@@ -37,77 +37,29 @@ public class ProtoMessage {
      */
     private List<String> comments = new ArrayList<>();
 
-    public ProtoMessage addMessage(ProtoMessage child) {
-        if (child == null) {
-            return this;
-        }
-        getMessages().add(child);
-        return this;
-    }
 
-    public ProtoMessage addField(PbField field) {
-        if (field == null) {
-            return this;
-        }
-        getFields().add(field);
-        return this;
-    }
-
-    /**
-     * 消息的名称
-     *
-     * @return the name
-     */
     public String getName() {
         return name;
     }
 
-    /**
-     * 消息的名称
-     *
-     * @param name the name to set
-     */
-    public ProtoMessage setName(String name) {
+    public void setName(String name) {
         this.name = name;
-        return this;
     }
 
-    /**
-     * 消息包含的Fields列表
-     *
-     * @return the fields
-     */
     public List<PbField> getFields() {
         return fields;
     }
 
-    /**
-     * 消息包含的Fields列表
-     *
-     * @param fields the fields to set
-     */
-    public ProtoMessage setFields(List<PbField> fields) {
+    public void setFields(List<PbField> fields) {
         this.fields = fields;
-        return this;
     }
 
-    /**
-     * 消息内嵌的Message列表
-     *
-     * @return the messages
-     */
-    public List<ProtoMessage> getMessages() {
+    public List<ProtoMessage> getProtoMessages() {
         return protoMessages;
     }
 
-    /**
-     * 消息内嵌的Message列表
-     *
-     * @param protoMessages the messages to set
-     */
-    public ProtoMessage setMessages(List<ProtoMessage> protoMessages) {
+    public void setProtoMessages(List<ProtoMessage> protoMessages) {
         this.protoMessages = protoMessages;
-        return this;
     }
 
     public List<String> getComments() {
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Syntax.java b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Syntax.java
index 853bfa7d..f270a6bc 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Syntax.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/protobuf/wire/Syntax.java
@@ -31,14 +31,4 @@ public enum Syntax {
         return value;
     }
 
-    public static Syntax fromValue(String value) {
-        switch (value) {
-            case "proto2":
-                return Syntax.PROTO_2;
-            case "proto3":
-                return Syntax.PROTO_3;
-            default:
-                throw new IllegalArgumentException("no enum value Syntax " + value);
-        }
-    }
 }
\ No newline at end of file