diff --git a/paimon-core/src/main/java/org/apache/paimon/iceberg/metadata/IcebergDataField.java b/paimon-core/src/main/java/org/apache/paimon/iceberg/metadata/IcebergDataField.java
index c5588b1d3769..e12ebf9852a9 100644
--- a/paimon-core/src/main/java/org/apache/paimon/iceberg/metadata/IcebergDataField.java
+++ b/paimon-core/src/main/java/org/apache/paimon/iceberg/metadata/IcebergDataField.java
@@ -200,6 +200,9 @@ private static Object toTypeObject(DataType dataType, int fieldId, int depth) {
     }
 
     public DataType getDataType() {
+        if (dataType != null) {
+            return dataType;
+        }
         String simpleType = type.toString();
         String delimiter = "(";
         if (simpleType.contains("[")) {