diff --git a/CHANGELOG.md b/CHANGELOG.md
index 16dddd9e9..e39f76b03 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,7 +15,8 @@
 * 【core   】     CollStreamUtil为空返回空的集合变为可编辑（pr#681@Gitee）
 * 【core   】     增加StrUtil.containsAll（pr#2437@Github）
 * 【core   】     ForestMap添加getNodeValue方法（pr#699@Gitee）
-* 【http   】     优化HttpUtil.isHttp判断，避免NPE（pr#697@Gitee）
+* 【http   】     优化HttpUtil.isHttp判断，避免NPE（pr#698@Gitee）
+* 【core   】     修复Dict#containsKey方法没区分大小写问题（pr#697@Gitee）
 * 
 ### 🐞Bug修复
 * 【core   】     修复CollUtil里面关于可变参数传null造成的crash问题（pr#2428@Github）
diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/Dict.java b/hutool-core/src/main/java/cn/hutool/core/lang/Dict.java
index 7118772e2..14424aa7b 100755
--- a/hutool-core/src/main/java/cn/hutool/core/lang/Dict.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/Dict.java
@@ -19,6 +19,7 @@ import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.Objects;
+import java.util.function.BiFunction;
 
 /**
  * 字典对象，扩充了HashMap中的方法
@@ -567,6 +568,11 @@ public class Dict extends LinkedHashMap<String, Object> implements BasicTypeGett
 	}
 	// -------------------------------------------------------------------- Get end
 
+	@Override
+	public boolean containsKey(Object key) {
+		return super.containsKey(customKey((String) key));
+	}
+
 	@Override
 	public Object get(Object key) {
 		return super.get(customKey((String) key));
@@ -587,6 +593,48 @@ public class Dict extends LinkedHashMap<String, Object> implements BasicTypeGett
 		return (Dict) super.clone();
 	}
 
+	@Override
+	public Object remove(Object key) {
+		return super.remove(customKey((String) key));
+	}
+
+	@Override
+	public boolean remove(Object key, Object value) {
+		return super.remove(customKey((String) key), value);
+	}
+
+	@Override
+	public boolean replace(String key, Object oldValue, Object newValue) {
+		return super.replace(customKey(key), oldValue, newValue);
+	}
+
+	@Override
+	public Object replace(String key, Object value) {
+		return super.replace(customKey(key), value);
+	}
+
+	//---------------------------------------------------------------------------- Override default methods start
+	@Override
+	public Object getOrDefault(Object key, Object defaultValue) {
+		return super.getOrDefault(customKey((String) key), defaultValue);
+	}
+
+	@Override
+	public Object computeIfPresent(final String key, final BiFunction<? super String, ? super Object, ?> remappingFunction) {
+		return super.computeIfPresent(customKey(key), remappingFunction);
+	}
+
+	@Override
+	public Object compute(final String key, final BiFunction<? super String, ? super Object, ?> remappingFunction) {
+		return super.compute(customKey(key), remappingFunction);
+	}
+
+	@Override
+	public Object merge(final String key, final Object value, final BiFunction<? super Object, ? super Object, ?> remappingFunction) {
+		return super.merge(customKey(key), value, remappingFunction);
+	}
+	//---------------------------------------------------------------------------- Override default methods end
+
 	/**
 	 * 将Key转为小写
 	 *
@@ -617,9 +665,4 @@ public class Dict extends LinkedHashMap<String, Object> implements BasicTypeGett
 		return this;
 	}
 
-	@Override
-	public boolean containsKey(Object key) {
-		return super.containsKey(customKey((String) key));
-	}
-
 }
diff --git a/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java b/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java
index 2fa508c53..e6608aec9 100755
--- a/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java
+++ b/hutool-core/src/main/java/cn/hutool/core/map/TransMap.java
@@ -70,7 +70,7 @@ public abstract class TransMap<K, V> extends MapWrapper<K, V> {
 
 	@Override
 	public boolean replace(K key, V oldValue, V newValue) {
-		return super.replace(customKey(key), customValue(oldValue), customValue(values()));
+		return super.replace(customKey(key), customValue(oldValue), customValue(newValue));
 	}
 
 	@Override