diff --git a/src/main/java/org/redkale/convert/ObjectEncoder.java b/src/main/java/org/redkale/convert/ObjectEncoder.java
index fcd15cd0b..d67552451 100644
--- a/src/main/java/org/redkale/convert/ObjectEncoder.java
+++ b/src/main/java/org/redkale/convert/ObjectEncoder.java
@@ -343,15 +343,15 @@ public class ObjectEncoder<W extends Writer, T> implements Encodeable<W, T> {
         if (out.objExtFunc != null) {
             ConvertField[] extFields = out.objExtFunc.apply(value);
             if (extFields != null) {
-                Encodeable<W, ?> anyEncoder = factory.getAnyEncoder();
                 for (ConvertField en : extFields) {
                     if (en != null) {
+                        Encodeable<W, ?> extEncoder = factory.loadEncoder(en.getType());
                         maxPosition++;
                         out.writeFieldValue(
                                 en.getName(),
                                 en.getType(),
                                 Math.max(en.getPosition(), maxPosition),
-                                anyEncoder,
+                                extEncoder,
                                 en.getValue());
                     }
                 }
diff --git a/src/main/java/org/redkale/convert/Writer.java b/src/main/java/org/redkale/convert/Writer.java
index 813c4eda2..8f2b6bf3c 100644
--- a/src/main/java/org/redkale/convert/Writer.java
+++ b/src/main/java/org/redkale/convert/Writer.java
@@ -151,12 +151,11 @@ public abstract class Writer {
      * @param fieldName 字段名称
      * @param fieldType 字段类型
      * @param fieldPos 字段顺序
-     * @param anyEncoder Encoder
+     * @param fieldEncoder Encoder
      * @param value 写入的字段对象
      */
     @SuppressWarnings("unchecked")
-    public void writeFieldValue(
-            final String fieldName, Type fieldType, int fieldPos, Encodeable anyEncoder, Object value) {
+    public void writeFieldValue(String fieldName, Type fieldType, int fieldPos, Encodeable fieldEncoder, Object value) {
         if (value == null) {
             if (nullable()) {
                 this.writeField(null, fieldName, fieldType, fieldPos);
@@ -181,7 +180,7 @@ public abstract class Writer {
             }
         }
         this.writeField(null, fieldName, fieldType, fieldPos);
-        anyEncoder.convertTo(this, value);
+        fieldEncoder.convertTo(this, value);
         this.comma = true;
     }