diff --git a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/DecodeFunction.java b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/DecodeFunction.java
index 92a0b55376e..042e6b4f98d 100644
--- a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/DecodeFunction.java
+++ b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/DecodeFunction.java
@@ -31,7 +31,12 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-
+/**
+ * DecodeFunction
+ * description: decode(binary, string)
+ *      Decode using the supplied character set (' US-ASCII ', 'ISO-8859-1', 'UTF-8', 'UTF-16BE', 'UTF-16LE', 'UTF-16').
+ *      If either parameter is empty, the result will also be empty.
+ */
 @TransformFunction(names = {"decode"})
 public class DecodeFunction implements ValueParser {
 
diff --git a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/EncodeFunction.java b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/EncodeFunction.java
index 64a7e6aea46..8196c529fcd 100644
--- a/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/EncodeFunction.java
+++ b/inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/EncodeFunction.java
@@ -31,7 +31,12 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-
+/**
+ * EncodeFunction
+ * description: encode(string1, string2)
+ *      Encode using the provided character set (' US-ASCII ', 'ISO-8859-1', 'UTF-8', 'UTF-16BE', 'UTF-16LE', 'UTF-16').
+ *      If either parameter is empty, the result will also be empty.
+ */
 @TransformFunction(names = {"encode"})
 public class EncodeFunction implements ValueParser {