diff --git a/src/org/redkale/convert/ConvertFactory.java b/src/org/redkale/convert/ConvertFactory.java
index 9f83668b9..0784448db 100644
--- a/src/org/redkale/convert/ConvertFactory.java
+++ b/src/org/redkale/convert/ConvertFactory.java
@@ -91,6 +91,7 @@ public abstract class ConvertFactory<R extends Reader, W extends Writer> {
 
             this.register(Number.class, NumberSimpledCoder.instance);
             this.register(String.class, StringSimpledCoder.instance);
+            this.register(StringConvertWrapper.class, StringConvertWrapperSimpledCoder.instance);
             this.register(CharSequence.class, CharSequenceSimpledCoder.instance);
             this.register(java.util.Date.class, DateSimpledCoder.instance);
             this.register(java.time.Duration.class, DurationSimpledCoder.instance);
diff --git a/src/org/redkale/convert/StringConvertWrapper.java b/src/org/redkale/convert/StringConvertWrapper.java
new file mode 100644
index 000000000..e703a00d1
--- /dev/null
+++ b/src/org/redkale/convert/StringConvertWrapper.java
@@ -0,0 +1,55 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.redkale.convert;
+
+/**
+ * 序列化去掉引号的String对象。
+ * <blockquote><pre>
+ * 场景: JavaBean  a = ... ;
+ *        Map map = new HashMap();
+ *        map.put("bean", a);
+ *        records.add(map);
+ *        records需要在后期序列化写入库。 但是在这期间a的内部字段值可能就变化了，会导致入库时并不是records.add的快照信息。
+ *        所以需要使用StringConvertWrapper：
+ *        Map map = new HashMap();
+ *        map.put("bean", new StringConvertWrapper(a.toString()));
+ *        records.add(map);
+ *        这样序列化写库时不需要在bean的值上面多一层引号。
+ * </pre></blockquote>
+ * <p>
+ * 详情见: https://redkale.org
+ *
+ * @author zhangjx
+ */
+public class StringConvertWrapper {
+
+    protected String value;
+
+    public StringConvertWrapper() {
+    }
+
+    public StringConvertWrapper(String value) {
+        this.value = value;
+    }
+
+    public static StringConvertWrapper create(String value) {
+        return new StringConvertWrapper(value);
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+
+    @Override
+    public String toString() {
+        return value;
+    }
+
+}
diff --git a/src/org/redkale/convert/Writer.java b/src/org/redkale/convert/Writer.java
index 7772f6942..ec35492ef 100644
--- a/src/org/redkale/convert/Writer.java
+++ b/src/org/redkale/convert/Writer.java
@@ -256,4 +256,11 @@ public abstract class Writer {
      * @param value String值
      */
     public abstract void writeString(String value);
+
+    /**
+     * 写入一个StringConvertWrapper值
+     *
+     * @param value StringConvertWrapper值
+     */
+    public abstract void writeWrapper(StringConvertWrapper value);
 }
diff --git a/src/org/redkale/convert/bson/BsonWriter.java b/src/org/redkale/convert/bson/BsonWriter.java
index 029dd5f21..218c51484 100644
--- a/src/org/redkale/convert/bson/BsonWriter.java
+++ b/src/org/redkale/convert/bson/BsonWriter.java
@@ -241,6 +241,11 @@ public class BsonWriter extends Writer {
         writeTo(bytes);
     }
 
+    @Override
+    public final void writeWrapper(StringConvertWrapper value) {
+        this.writeString(value == null ? null : value.getValue());
+    }
+
     @Override
     public final void writeNull() {
         writeShort(Reader.SIGN_NULL);
diff --git a/src/org/redkale/convert/ext/StringConvertWrapperSimpledCoder.java b/src/org/redkale/convert/ext/StringConvertWrapperSimpledCoder.java
new file mode 100644
index 000000000..975985b5f
--- /dev/null
+++ b/src/org/redkale/convert/ext/StringConvertWrapperSimpledCoder.java
@@ -0,0 +1,34 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.redkale.convert.ext;
+
+import org.redkale.convert.*;
+
+/**
+ * String 的SimpledCoder实现
+ *
+ * <p>
+ * 详情见: https://redkale.org
+ *
+ * @author zhangjx
+ * @param <R> Reader输入的子类型
+ * @param <W> Writer输出的子类型
+ */
+public final class StringConvertWrapperSimpledCoder<R extends Reader, W extends Writer> extends SimpledCoder<R, W, StringConvertWrapper> {
+
+    public static final StringConvertWrapperSimpledCoder instance = new StringConvertWrapperSimpledCoder();
+
+    @Override
+    public void convertTo(W out, StringConvertWrapper value) {
+        out.writeWrapper(value);
+    }
+
+    @Override
+    public StringConvertWrapper convertFrom(R in) {
+        return new StringConvertWrapper(in.readString());
+    }
+
+}
diff --git a/src/org/redkale/convert/json/JsonWriter.java b/src/org/redkale/convert/json/JsonWriter.java
index a5d675b0a..39c405c5c 100644
--- a/src/org/redkale/convert/json/JsonWriter.java
+++ b/src/org/redkale/convert/json/JsonWriter.java
@@ -319,6 +319,11 @@ public class JsonWriter extends Writer {
         writeTo(false, String.valueOf(value));
     }
 
+    @Override
+    public final void writeWrapper(StringConvertWrapper value) {
+        writeTo(false, String.valueOf(value));
+    }
+
     @Override
     public final boolean needWriteClassName() {
         return false;