diff --git a/frontend/components/screen/table-options/ColumnVisibilityPanel.tsx b/frontend/components/screen/table-options/ColumnVisibilityPanel.tsx
index 2373aa0a..c03dac58 100644
--- a/frontend/components/screen/table-options/ColumnVisibilityPanel.tsx
+++ b/frontend/components/screen/table-options/ColumnVisibilityPanel.tsx
@@ -85,6 +85,15 @@ export const ColumnVisibilityPanel: React.FC<Props> = ({
 
   const handleApply = () => {
     table?.onColumnVisibilityChange(localColumns);
+    
+    // 컬럼 순서 변경 콜백 호출
+    if (table?.onColumnOrderChange) {
+      const newOrder = localColumns
+        .map((col) => col.columnName)
+        .filter((name) => name !== "__checkbox__");
+      table.onColumnOrderChange(newOrder);
+    }
+    
     onClose();
   };
 
diff --git a/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx b/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx
index 85e1f361..68a686b8 100644
--- a/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx
+++ b/frontend/lib/registry/components/split-panel-layout/SplitPanelLayoutComponent.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import React, { useState, useCallback, useEffect } from "react";
+import React, { useState, useCallback, useEffect, useMemo } from "react";
 import { ComponentRendererProps } from "../../types";
 import { SplitPanelLayoutConfig } from "./types";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
@@ -8,12 +8,14 @@ import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Plus, Search, GripVertical, Loader2, ChevronDown, ChevronUp, Save, ChevronRight, Pencil, Trash2 } from "lucide-react";
 import { dataApi } from "@/lib/api/data";
+import { entityJoinApi } from "@/lib/api/entityJoin";
 import { useToast } from "@/hooks/use-toast";
 import { tableTypeApi } from "@/lib/api/screen";
 import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription } from "@/components/ui/dialog";
 import { Label } from "@/components/ui/label";
 import { useTableOptions } from "@/contexts/TableOptionsContext";
 import { TableFilter, ColumnVisibility } from "@/types/table-options";
+import { useAuth } from "@/hooks/useAuth";
 
 export interface SplitPanelLayoutComponentProps extends ComponentRendererProps {
   // 추가 props
@@ -44,6 +46,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
   const [leftFilters, setLeftFilters] = useState<TableFilter[]>([]);
   const [leftGrouping, setLeftGrouping] = useState<string[]>([]);
   const [leftColumnVisibility, setLeftColumnVisibility] = useState<ColumnVisibility[]>([]);
+  const [leftColumnOrder, setLeftColumnOrder] = useState<string[]>([]); // 🔧 컬럼 순서
   const [rightFilters, setRightFilters] = useState<TableFilter[]>([]);
   const [rightGrouping, setRightGrouping] = useState<string[]>([]);
   const [rightColumnVisibility, setRightColumnVisibility] = useState<ColumnVisibility[]>([]);
@@ -160,6 +163,9 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
     return rootItems;
   }, [componentConfig.leftPanel?.itemAddConfig]);
 
+  // 🔧 사용자 ID 가져오기
+  const { userId: currentUserId } = useAuth();
+
   // 🔄 필터를 searchValues 형식으로 변환
   const searchValues = useMemo(() => {
     if (!leftFilters || leftFilters.length === 0) return {};
@@ -176,22 +182,44 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
     return values;
   }, [leftFilters]);
 
-  // 🔄 컬럼 가시성 처리
+  // 🔄 컬럼 가시성 및 순서 처리
   const visibleLeftColumns = useMemo(() => {
     const displayColumns = componentConfig.leftPanel?.columns || [];
+    console.log("🔍 [분할패널] visibleLeftColumns 계산:", {
+      displayColumns: displayColumns.length,
+      leftColumnVisibility: leftColumnVisibility.length,
+      leftColumnOrder: leftColumnOrder.length,
+    });
+    
     if (displayColumns.length === 0) return [];
     
+    let columns = displayColumns;
+    
     // columnVisibility가 있으면 가시성 적용
     if (leftColumnVisibility.length > 0) {
       const visibilityMap = new Map(leftColumnVisibility.map(cv => [cv.columnName, cv.visible]));
-      return displayColumns.filter((col: any) => {
+      columns = columns.filter((col: any) => {
         const colName = typeof col === 'string' ? col : (col.name || col.columnName);
         return visibilityMap.get(colName) !== false;
       });
+      console.log("✅ [분할패널] 가시성 적용 후:", columns.length);
     }
     
-    return displayColumns;
-  }, [componentConfig.leftPanel?.columns, leftColumnVisibility]);
+    // 🔧 컬럼 순서 적용
+    if (leftColumnOrder.length > 0) {
+      const orderMap = new Map(leftColumnOrder.map((name, index) => [name, index]));
+      columns = [...columns].sort((a, b) => {
+        const aName = typeof a === 'string' ? a : (a.name || a.columnName);
+        const bName = typeof b === 'string' ? b : (b.name || b.columnName);
+        const aIndex = orderMap.get(aName) ?? 999;
+        const bIndex = orderMap.get(bName) ?? 999;
+        return aIndex - bIndex;
+      });
+      console.log("✅ [분할패널] 순서 적용 후:", columns.map((c: any) => typeof c === 'string' ? c : (c.name || c.columnName)));
+    }
+    
+    return columns;
+  }, [componentConfig.leftPanel?.columns, leftColumnVisibility, leftColumnOrder]);
 
   // 🔄 데이터 그룹화
   const groupedLeftData = useMemo(() => {
@@ -227,13 +255,26 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
 
     setIsLoadingLeft(true);
     try {
-      // 🎯 필터 조건을 API에 전달
+      // 🎯 필터 조건을 API에 전달 (entityJoinApi 사용)
       const filters = Object.keys(searchValues).length > 0 ? searchValues : undefined;
       
-      const result = await dataApi.getTableData(leftTableName, {
+      console.log("📡 [분할패널] API 호출 시작:", {
+        tableName: leftTableName,
+        filters,
+        searchValues,
+      });
+      
+      const result = await entityJoinApi.getTableDataWithJoins(leftTableName, {
         page: 1,
         size: 100,
         search: filters, // 필터 조건 전달
+        enableEntityJoin: true, // 엔티티 조인 활성화
+      });
+      
+      console.log("📡 [분할패널] API 응답:", {
+        success: result.success,
+        dataLength: result.data?.length || 0,
+        totalItems: result.totalItems,
       });
       
       // 가나다순 정렬 (좌측 패널의 표시 컬럼 기준)
@@ -346,6 +387,29 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
     [rightTableColumns],
   );
 
+  // 🔧 컬럼의 고유값 가져오기 함수
+  const getLeftColumnUniqueValues = useCallback(async (columnName: string) => {
+    const leftTableName = componentConfig.leftPanel?.tableName;
+    if (!leftTableName || leftData.length === 0) return [];
+
+    // 현재 로드된 데이터에서 고유값 추출
+    const uniqueValues = new Set<string>();
+    
+    leftData.forEach((item) => {
+      const value = item[columnName];
+      if (value !== null && value !== undefined && value !== '') {
+        // _name 필드 우선 사용 (category/entity type)
+        const displayValue = item[`${columnName}_name`] || value;
+        uniqueValues.add(String(displayValue));
+      }
+    });
+    
+    return Array.from(uniqueValues).map(value => ({
+      value: value,
+      label: value,
+    }));
+  }, [componentConfig.leftPanel?.tableName, leftData]);
+
   // 좌측 테이블 등록 (Context에 등록)
   useEffect(() => {
     const leftTableName = componentConfig.leftPanel?.tableName;
@@ -379,10 +443,12 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
       onFilterChange: setLeftFilters,
       onGroupChange: setLeftGrouping,
       onColumnVisibilityChange: setLeftColumnVisibility,
+      onColumnOrderChange: setLeftColumnOrder, // 🔧 컬럼 순서 변경 콜백 추가
+      getColumnUniqueValues: getLeftColumnUniqueValues, // 🔧 고유값 가져오기 함수 추가
     });
 
     return () => unregisterTable(leftTableId);
-  }, [component.id, componentConfig.leftPanel?.tableName, componentConfig.leftPanel?.columns, leftColumnLabels, component.title, isDesignMode]);
+  }, [component.id, componentConfig.leftPanel?.tableName, componentConfig.leftPanel?.columns, leftColumnLabels, component.title, isDesignMode, getLeftColumnUniqueValues]);
 
   // 우측 테이블은 검색 컴포넌트 등록 제외 (좌측 마스터 테이블만 검색 가능)
   // useEffect(() => {
@@ -858,6 +924,51 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
     }
   }, [addModalPanel, componentConfig, addModalFormData, toast, selectedLeftItem, loadLeftData, loadRightData]);
 
+  // 🔧 좌측 컬럼 가시성 설정 저장 및 불러오기
+  useEffect(() => {
+    const leftTableName = componentConfig.leftPanel?.tableName;
+    if (leftTableName && currentUserId) {
+      // localStorage에서 저장된 설정 불러오기
+      const storageKey = `table_column_visibility_${leftTableName}_${currentUserId}`;
+      const savedSettings = localStorage.getItem(storageKey);
+      
+      if (savedSettings) {
+        try {
+          const parsed = JSON.parse(savedSettings) as ColumnVisibility[];
+          setLeftColumnVisibility(parsed);
+        } catch (error) {
+          console.error("저장된 컬럼 설정 불러오기 실패:", error);
+        }
+      }
+    }
+  }, [componentConfig.leftPanel?.tableName, currentUserId]);
+
+  // 🔧 컬럼 가시성 변경 시 localStorage에 저장 및 순서 업데이트
+  useEffect(() => {
+    const leftTableName = componentConfig.leftPanel?.tableName;
+    console.log("🔍 [분할패널] 컬럼 가시성 변경 감지:", {
+      leftColumnVisibility: leftColumnVisibility.length,
+      leftTableName,
+      currentUserId,
+      visibility: leftColumnVisibility,
+    });
+    
+    if (leftColumnVisibility.length > 0 && leftTableName && currentUserId) {
+      // 순서 업데이트
+      const newOrder = leftColumnVisibility
+        .map((cv) => cv.columnName)
+        .filter((name) => name !== "__checkbox__"); // 체크박스 제외
+      
+      console.log("✅ [분할패널] 컬럼 순서 업데이트:", newOrder);
+      setLeftColumnOrder(newOrder);
+      
+      // localStorage에 저장
+      const storageKey = `table_column_visibility_${leftTableName}_${currentUserId}`;
+      localStorage.setItem(storageKey, JSON.stringify(leftColumnVisibility));
+      console.log("💾 [분할패널] localStorage 저장:", storageKey);
+    }
+  }, [leftColumnVisibility, componentConfig.leftPanel?.tableName, currentUserId]);
+
   // 초기 데이터 로드
   useEffect(() => {
     if (!isDesignMode && componentConfig.autoLoad !== false) {
@@ -868,7 +979,16 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
 
   // 🔄 필터 변경 시 데이터 다시 로드
   useEffect(() => {
+    console.log("🔍 [분할패널] 필터 변경 감지:", {
+      leftFilters: leftFilters.length,
+      filters: leftFilters,
+      isDesignMode,
+      autoLoad: componentConfig.autoLoad,
+      searchValues,
+    });
+    
     if (!isDesignMode && componentConfig.autoLoad !== false) {
+      console.log("✅ [분할패널] loadLeftData 호출 (필터 변경)");
       loadLeftData();
     }
     // eslint-disable-next-line react-hooks/exhaustive-deps