diff --git a/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/BitSailTypeParser.java b/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/BitSailTypeParser.java
index 0e38dd7f9..325adc35c 100644
--- a/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/BitSailTypeParser.java
+++ b/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/BitSailTypeParser.java
@@ -72,19 +72,16 @@ public static TypeInfo<?> fromTypeString(String typeString) {
     LOG.debug("type string = {}.", typeString);
     typeString = StringUtils.trim(StringUtils.upperCase(typeString));
 
-    if (StringUtils.startsWithIgnoreCase(typeString, Types.MAP.name())
-        || StringUtils.startsWithIgnoreCase(typeString, Types.LIST.name())) {
-
-      if (StringUtils.startsWithIgnoreCase(typeString, Types.MAP.name())) {
-
-        String[] mapTypeString = parseMapTypeString(typeString);
-        return new MapTypeInfo<>(fromTypeString(mapTypeString[0]), fromTypeString(mapTypeString[1]));
-      } else {
+    if (StringUtils.startsWithIgnoreCase(typeString, Types.MAP.name())) {
+      String[] mapTypeString = parseMapTypeString(typeString);
+      return new MapTypeInfo<>(fromTypeString(mapTypeString[0]), fromTypeString(mapTypeString[1]));
+    }
 
-        String elementTypeString = parseListTypeString(typeString);
-        return new ListTypeInfo<>(fromTypeString(elementTypeString));
-      }
+    if (StringUtils.startsWithIgnoreCase(typeString, Types.LIST.name())) {
+      String elementTypeString = parseListTypeString(typeString);
+      return new ListTypeInfo<>(fromTypeString(elementTypeString));
     }
+
     TypeInfo<?> typeInfo = TypeInfoBridge.bridgeTypeInfo(typeString);
     if (Objects.isNull(typeInfo)) {
       throw BitSailException.asBitSailException(CommonErrorCode.INTERNAL_ERROR,
diff --git a/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/filemapping/FileMappingTypeInfoReader.java b/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/filemapping/FileMappingTypeInfoReader.java
index 39d17807b..53004ddd0 100644
--- a/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/filemapping/FileMappingTypeInfoReader.java
+++ b/bitsail-common/src/main/java/com/bytedance/bitsail/common/type/filemapping/FileMappingTypeInfoReader.java
@@ -113,7 +113,7 @@ protected void handleEngineTypeToCustom(Map<String, String> tmpToTypeInformation
             .format("Engine type %s not support transform to custom type.", entry.getValue()));
       }
 
-      toTypeInformation.put(entry.getKey(), customTypeInfo);
+      toTypeInformation.put(StringUtils.lowerCase(entry.getKey()), customTypeInfo);
     }
   }
 
@@ -125,7 +125,7 @@ protected void handleCustomToEngineType(Map<String, String> tmpFromTypeInformati
         throw new IllegalArgumentException(String.format("From Custom type %s is invalid.", entry.getKey()));
       }
 
-      fromTypeInformation.put(typeInfo, entry.getValue());
+      fromTypeInformation.put(typeInfo, StringUtils.lowerCase(entry.getValue()));
     }
   }
 }
diff --git a/bitsail-common/src/test/java/com/bytedance/bitsail/common/typeinfo/TypeInfoUtilsTest.java b/bitsail-common/src/test/java/com/bytedance/bitsail/common/typeinfo/TypeInfoUtilsTest.java
new file mode 100644
index 000000000..b49e43d1d
--- /dev/null
+++ b/bitsail-common/src/test/java/com/bytedance/bitsail/common/typeinfo/TypeInfoUtilsTest.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2022 Bytedance Ltd. and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.bytedance.bitsail.common.typeinfo;
+
+import com.bytedance.bitsail.common.model.ColumnInfo;
+import com.bytedance.bitsail.common.type.filemapping.FileMappingTypeInfoConverter;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TypeInfoUtilsTest {
+
+  @Test
+  public void testGetTypeInfos() {
+    FileMappingTypeInfoConverter fileMappingTypeInfoConverter = new FileMappingTypeInfoConverter("fake");
+
+    List<ColumnInfo> columnInfos = new ArrayList<>();
+    columnInfos.add(new ColumnInfo("id", "long"));
+    columnInfos.add(new ColumnInfo("name", "String"));
+
+    TypeInfo<?>[] typeInfos = TypeInfoUtils.getTypeInfos(fileMappingTypeInfoConverter, columnInfos);
+    Assert.assertEquals(typeInfos.length, 2);
+  }
+}
diff --git a/bitsail-common/src/test/resources/fake-type-converter.yaml b/bitsail-common/src/test/resources/fake-type-converter.yaml
index f0fc43d9c..d2481bb70 100644
--- a/bitsail-common/src/test/resources/fake-type-converter.yaml
+++ b/bitsail-common/src/test/resources/fake-type-converter.yaml
@@ -8,7 +8,7 @@ engine.type.to.bitsail.type.converter:
   - source.type: date
     target.type: date.date
 
-  - source.type: long
+  - source.type: Long
     target.type: long
 
   - source.type: string