diff --git a/frontend/components/screen/widgets/CategoryWidget.tsx b/frontend/components/screen/widgets/CategoryWidget.tsx
index 0191cba3..54c8f98b 100644
--- a/frontend/components/screen/widgets/CategoryWidget.tsx
+++ b/frontend/components/screen/widgets/CategoryWidget.tsx
@@ -1,8 +1,9 @@
 "use client";
 
-import React, { useState } from "react";
+import React, { useState, useRef, useCallback } from "react";
 import { CategoryColumnList } from "@/components/table-category/CategoryColumnList";
 import { CategoryValueManager } from "@/components/table-category/CategoryValueManager";
+import { GripVertical } from "lucide-react";
 
 interface CategoryWidgetProps {
   widgetId: string;
@@ -19,11 +20,49 @@ export function CategoryWidget({ widgetId, tableName }: CategoryWidgetProps) {
     columnName: string;
     columnLabel: string;
   } | null>(null);
+  
+  const [leftWidth, setLeftWidth] = useState(15); // 초기값 15%
+  const containerRef = useRef<HTMLDivElement>(null);
+  const isDraggingRef = useRef(false);
+
+  const handleMouseDown = useCallback(() => {
+    isDraggingRef.current = true;
+    document.body.style.cursor = "col-resize";
+    document.body.style.userSelect = "none";
+  }, []);
+
+  const handleMouseMove = useCallback((e: MouseEvent) => {
+    if (!isDraggingRef.current || !containerRef.current) return;
+
+    const containerRect = containerRef.current.getBoundingClientRect();
+    const newLeftWidth = ((e.clientX - containerRect.left) / containerRect.width) * 100;
+
+    // 최소 10%, 최대 40%로 제한
+    if (newLeftWidth >= 10 && newLeftWidth <= 40) {
+      setLeftWidth(newLeftWidth);
+    }
+  }, []);
+
+  const handleMouseUp = useCallback(() => {
+    isDraggingRef.current = false;
+    document.body.style.cursor = "";
+    document.body.style.userSelect = "";
+  }, []);
+
+  React.useEffect(() => {
+    document.addEventListener("mousemove", handleMouseMove);
+    document.addEventListener("mouseup", handleMouseUp);
+
+    return () => {
+      document.removeEventListener("mousemove", handleMouseMove);
+      document.removeEventListener("mouseup", handleMouseUp);
+    };
+  }, [handleMouseMove, handleMouseUp]);
 
   return (
-    <div className="flex h-full min-h-[10px] gap-6">
-      {/* 좌측: 카테고리 컬럼 리스트 (15%) */}
-      <div className="w-[15%] border-r pr-6">
+    <div ref={containerRef} className="flex h-full min-h-[10px] gap-0">
+      {/* 좌측: 카테고리 컬럼 리스트 */}
+      <div style={{ width: `${leftWidth}%` }} className="pr-3">
         <CategoryColumnList
           tableName={tableName}
           selectedColumn={selectedColumn?.columnName || null}
@@ -33,8 +72,16 @@ export function CategoryWidget({ widgetId, tableName }: CategoryWidgetProps) {
         />
       </div>
 
-      {/* 우측: 카테고리 값 관리 (85%) */}
-      <div className="w-[85%]">
+      {/* 리사이저 */}
+      <div
+        onMouseDown={handleMouseDown}
+        className="group relative flex w-3 cursor-col-resize items-center justify-center border-r hover:bg-accent/50 transition-colors"
+      >
+        <GripVertical className="h-4 w-4 text-muted-foreground group-hover:text-foreground transition-colors" />
+      </div>
+
+      {/* 우측: 카테고리 값 관리 */}
+      <div style={{ width: `${100 - leftWidth - 1}%` }} className="pl-3">
         {selectedColumn ? (
           <CategoryValueManager
             tableName={tableName}