diff --git a/package-lock.json b/package-lock.json
index b7aabdb..f9dd4a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,9 @@
       "version": "0.1.0",
       "dependencies": {
         "@ant-design/icons": "^6.2.5",
+        "@dnd-kit/core": "^6.3.1",
+        "@dnd-kit/sortable": "^10.0.0",
+        "@dnd-kit/utilities": "^3.2.2",
         "antd": "^6.4.3",
         "mssql": "^12.5.5",
         "next": "16.2.9",
@@ -625,6 +628,60 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@dnd-kit/accessibility": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmmirror.com/@dnd-kit/accessibility/-/accessibility-3.1.1.tgz",
+      "integrity": "sha512-2P+YgaXF+gRsIihwwY1gCsQSYnu9Zyj2py8kY5fFvUM1qm2WA2u639R6YNVfU4GWr+ZM5mqEsfHZZLoRONbemw==",
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      }
+    },
+    "node_modules/@dnd-kit/core": {
+      "version": "6.3.1",
+      "resolved": "https://registry.npmmirror.com/@dnd-kit/core/-/core-6.3.1.tgz",
+      "integrity": "sha512-xkGBRQQab4RLwgXxoqETICr6S5JlogafbhNsidmrkVv2YRs5MLwpjoF2qpiGjQt8S9AoxtIV603s0GIUpY5eYQ==",
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "@dnd-kit/accessibility": "^3.1.1",
+        "@dnd-kit/utilities": "^3.2.2",
+        "tslib": "^2.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0",
+        "react-dom": ">=16.8.0"
+      }
+    },
+    "node_modules/@dnd-kit/sortable": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmmirror.com/@dnd-kit/sortable/-/sortable-10.0.0.tgz",
+      "integrity": "sha512-+xqhmIIzvAYMGfBYYnbKuNicfSsk4RksY2XdmJhT+HAC01nix6fHCztU68jooFiMUB01Ky3F0FyOvhG/BZrWkg==",
+      "license": "MIT",
+      "dependencies": {
+        "@dnd-kit/utilities": "^3.2.2",
+        "tslib": "^2.0.0"
+      },
+      "peerDependencies": {
+        "@dnd-kit/core": "^6.3.0",
+        "react": ">=16.8.0"
+      }
+    },
+    "node_modules/@dnd-kit/utilities": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmmirror.com/@dnd-kit/utilities/-/utilities-3.2.2.tgz",
+      "integrity": "sha512-+MKAJEOfaBe5SmV6t34p80MMKhjvUz0vRrvVJbPT0WElzaOJ/1xs+D+KDv+tD/NE5ujfrChEcshd4fLn0wpiqg==",
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      }
+    },
     "node_modules/@emnapi/wasi-threads": {
       "version": "1.2.2",
       "resolved": "https://registry.npmmirror.com/@emnapi/wasi-threads/-/wasi-threads-1.2.2.tgz",
diff --git a/package.json b/package.json
index 1939daa..50edf66 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,9 @@
   },
   "dependencies": {
     "@ant-design/icons": "^6.2.5",
+    "@dnd-kit/core": "^6.3.1",
+    "@dnd-kit/sortable": "^10.0.0",
+    "@dnd-kit/utilities": "^3.2.2",
     "antd": "^6.4.3",
     "mssql": "^12.5.5",
     "next": "16.2.9",
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 5b34747..a751b22 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useCallback, useMemo, useState } from "react";
+import { useCallback, useEffect, useMemo, useState } from "react";
 import {
   Button,
   Input,
@@ -10,9 +10,26 @@ import {
   Alert,
   Typography,
   Empty,
+  Modal,
+  Checkbox,
 } from "antd";
-import { SearchOutlined } from "@ant-design/icons";
+import { SearchOutlined, SettingOutlined, HolderOutlined } from "@ant-design/icons";
 import type { ColumnsType } from "antd/es/table";
+import {
+  DndContext,
+  closestCenter,
+  PointerSensor,
+  useSensor,
+  useSensors,
+} from "@dnd-kit/core";
+import type { DragEndEvent } from "@dnd-kit/core";
+import {
+  SortableContext,
+  useSortable,
+  verticalListSortingStrategy,
+  arrayMove,
+} from "@dnd-kit/sortable";
+import { CSS } from "@dnd-kit/utilities";
 
 const { Title, Text } = Typography;
 
@@ -20,6 +37,11 @@ interface DataRow {
   [key: string]: string | number | null;
 }
 
+interface ColumnConfig {
+  key: string;
+  visible: boolean;
+}
+
 const COLUMN_DEFS: { key: string; width: number }[] = [
   { key: "ID", width: 70 },
   { key: "总排号", width: 100 },
@@ -79,39 +101,223 @@ const COLUMN_DEFS: { key: string; width: number }[] = [
   { key: "烘洗", width: 110 },
 ];
 
-function buildColumns(keys: string[]): ColumnsType<DataRow> {
-  return keys.map((key) => {
-    const def = COLUMN_DEFS.find((d) => d.key === key);
-    return {
-      title: key,
-      dataIndex: key,
-      key,
-      width: def?.width ?? 120,
-      ellipsis: true,
-      render: (val: string | number | null) => {
-        if (val === null || val === undefined) return "";
-        return String(val);
-      },
-    };
-  });
+const DEFAULT_CONFIG: ColumnConfig[] = COLUMN_DEFS.map((d) => ({
+  key: d.key,
+  visible: true,
+}));
+
+const STORAGE_KEY = "web-table-column-config";
+
+function loadConfig(): ColumnConfig[] {
+  try {
+    const saved = localStorage.getItem(STORAGE_KEY);
+    if (saved) {
+      const parsed: ColumnConfig[] = JSON.parse(saved);
+      const savedKeys = new Set(parsed.map((c) => c.key));
+      if (COLUMN_DEFS.every((d) => savedKeys.has(d.key))) return parsed;
+    }
+  } catch {
+    /* ignore */
+  }
+  return DEFAULT_CONFIG.map((c) => ({ ...c }));
 }
 
-// Search bar: isolated component with its own input state
-// Typing only re-renders THIS component, not the parent with the heavy Table
+function saveConfig(config: ColumnConfig[]) {
+  localStorage.setItem(STORAGE_KEY, JSON.stringify(config));
+}
+
+function buildTableColumns(
+  config: ColumnConfig[],
+  dataColumns: string[]
+): ColumnsType<DataRow> {
+  const available = new Set(dataColumns);
+  return config
+    .filter((c) => c.visible && available.has(c.key))
+    .map((c) => {
+      const def = COLUMN_DEFS.find((d) => d.key === c.key);
+      return {
+        title: c.key,
+        dataIndex: c.key,
+        key: c.key,
+        width: def?.width ?? 120,
+        ellipsis: true,
+        render: (val: string | number | null) =>
+          val === null || val === undefined ? "" : String(val),
+      };
+    });
+}
+
+/* ─── Sortable Row in Modal ─── */
+
+function SortableRow({
+  id,
+  label,
+  visible,
+  onToggle,
+}: {
+  id: string;
+  label: string;
+  visible: boolean;
+  onToggle: () => void;
+}) {
+  const {
+    attributes,
+    listeners,
+    setNodeRef,
+    transform,
+    transition,
+    isDragging,
+  } = useSortable({ id });
+  const style: React.CSSProperties = {
+    transform: CSS.Transform.toString(transform),
+    transition,
+    display: "flex",
+    alignItems: "center",
+    gap: 8,
+    padding: "6px 8px",
+    borderBottom: "1px solid #f5f5f5",
+    background: isDragging ? "#e6f4ff" : "#fff",
+    cursor: "default",
+  };
+
+  return (
+    <div ref={setNodeRef} style={style}>
+      <span
+        {...attributes}
+        {...listeners}
+        style={{ cursor: "grab", color: "#bbb", fontSize: 16, flexShrink: 0 }}
+      >
+        <HolderOutlined />
+      </span>
+      <Checkbox checked={visible} onChange={onToggle} style={{ flexShrink: 0 }} />
+      <span style={{ userSelect: "none" }}>{label}</span>
+    </div>
+  );
+}
+
+/* ─── Column Settings Modal ─── */
+
+function ColumnSettingsModal({
+  open,
+  config,
+  onApply,
+  onCancel,
+}: {
+  open: boolean;
+  config: ColumnConfig[];
+  onApply: (newConfig: ColumnConfig[]) => void;
+  onCancel: () => void;
+}) {
+  const [local, setLocal] = useState<ColumnConfig[]>([]);
+  const [search, setSearch] = useState("");
+  const sensors = useSensors(useSensor(PointerSensor, { activationConstraint: { distance: 4 } }));
+
+  // Sync when modal opens
+  useEffect(() => {
+    if (open) {
+      setLocal(config.map((c) => ({ ...c })));
+      setSearch("");
+    }
+  }, [open, config]);
+
+  const filtered = search
+    ? local.filter((c) => c.key.toLowerCase().includes(search.toLowerCase()))
+    : local;
+
+  const visibleCount = local.filter((c) => c.visible).length;
+
+  const handleDragEnd = (event: DragEndEvent) => {
+    const { active, over } = event;
+    if (!over || active.id === over.id) return;
+    setLocal((prev) => {
+      const oldIdx = prev.findIndex((c) => c.key === active.id);
+      const newIdx = prev.findIndex((c) => c.key === over.id);
+      return arrayMove(prev, oldIdx, newIdx);
+    });
+  };
+
+  const toggle = (key: string) => {
+    setLocal((prev) =>
+      prev.map((c) => (c.key === key ? { ...c, visible: !c.visible } : c))
+    );
+  };
+
+  const selectAll = () => setLocal((prev) => prev.map((c) => ({ ...c, visible: true })));
+  const deselectAll = () => setLocal((prev) => prev.map((c) => ({ ...c, visible: false })));
+  const resetDefault = () => setLocal(DEFAULT_CONFIG.map((c) => ({ ...c })));
+
+  return (
+    <Modal
+      title="列设置"
+      open={open}
+      onCancel={onCancel}
+      width={480}
+      footer={[
+        <Button key="cancel" onClick={onCancel}>
+          取消
+        </Button>,
+        <Button key="apply" type="primary" onClick={() => onApply(local)}>
+          确定 ({visibleCount}/{local.length})
+        </Button>,
+      ]}
+    >
+      <div style={{ marginBottom: 12, display: "flex", gap: 8, flexWrap: "wrap" }}>
+        <Input
+          placeholder="搜索字段名"
+          value={search}
+          onChange={(e) => setSearch(e.target.value)}
+          allowClear
+          style={{ width: 180 }}
+          size="small"
+        />
+        <Button size="small" onClick={selectAll}>
+          全选
+        </Button>
+        <Button size="small" onClick={deselectAll}>
+          取消全选
+        </Button>
+        <Button size="small" onClick={resetDefault}>
+          恢复默认
+        </Button>
+      </div>
+
+      <div style={{ maxHeight: 420, overflowY: "auto", border: "1px solid #f0f0f0", borderRadius: 6 }}>
+        <DndContext sensors={sensors} collisionDetection={closestCenter} onDragEnd={handleDragEnd}>
+          <SortableContext items={filtered.map((c) => c.key)} strategy={verticalListSortingStrategy}>
+            {filtered.map((c) => (
+              <SortableRow
+                key={c.key}
+                id={c.key}
+                label={c.key}
+                visible={c.visible}
+                onToggle={() => toggle(c.key)}
+              />
+            ))}
+          </SortableContext>
+        </DndContext>
+      </div>
+    </Modal>
+  );
+}
+
+/* ─── Search Bar (isolated) ─── */
+
 function SearchBar({
   loading,
   resultCount,
   searched,
   onSearch,
   onClear,
+  onOpenColumnSettings,
 }: {
   loading: boolean;
   resultCount: number;
   searched: boolean;
   onSearch: (workshopNo: string) => void;
   onClear: () => void;
+  onOpenColumnSettings: () => void;
 }) {
-  const [inputValue, setInputValue] = useState("R05697");
+  const [inputValue, setInputValue] = useState("");
 
   const handleSearch = useCallback(() => {
     if (inputValue.trim()) {
@@ -131,21 +337,26 @@ function SearchBar({
       <Title level={4} style={{ margin: 0, marginBottom: 12 }}>
         压力表合同生产数据
       </Title>
-      <Space.Compact>
-        <Input
-          prefix={<SearchOutlined />}
-          placeholder="请输入车间号，如 R05697"
-          value={inputValue}
-          onChange={(e) => setInputValue(e.target.value)}
-          onPressEnter={handleSearch}
-          allowClear
-          style={{ width: 320 }}
-        />
-        <Button type="primary" onClick={handleSearch} loading={loading}>
-          查询
+      <Space>
+        <Space.Compact>
+          <Input
+            prefix={<SearchOutlined />}
+            placeholder="请输入车间号，如 R05697"
+            value={inputValue}
+            onChange={(e) => setInputValue(e.target.value)}
+            onPressEnter={handleSearch}
+            allowClear
+            style={{ width: 320 }}
+          />
+          <Button type="primary" onClick={handleSearch} loading={loading}>
+            查询
+          </Button>
+          <Button onClick={onClear}>清除</Button>
+        </Space.Compact>
+        <Button icon={<SettingOutlined />} onClick={onOpenColumnSettings}>
+          列设置
         </Button>
-        <Button onClick={onClear}>清除</Button>
-      </Space.Compact>
+      </Space>
       {searched && !loading && (
         <Text type="secondary" style={{ marginLeft: 16 }}>
           共 {resultCount} 条记录
@@ -155,12 +366,21 @@ function SearchBar({
   );
 }
 
+/* ─── Main Page ─── */
+
 export default function Home() {
   const [data, setData] = useState<DataRow[]>([]);
   const [columns, setColumns] = useState<string[]>([]);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [searched, setSearched] = useState(false);
+  const [columnConfig, setColumnConfig] = useState<ColumnConfig[]>(loadConfig);
+  const [modalOpen, setModalOpen] = useState(false);
+
+  // Persist config
+  useEffect(() => {
+    saveConfig(columnConfig);
+  }, [columnConfig]);
 
   const handleSearch = useCallback(async (workshopNo: string) => {
     setLoading(true);
@@ -191,7 +411,15 @@ export default function Home() {
     setError(null);
   }, []);
 
-  const tableColumns = useMemo(() => buildColumns(columns), [columns]);
+  const handleApplyConfig = useCallback((newConfig: ColumnConfig[]) => {
+    setColumnConfig(newConfig);
+    setModalOpen(false);
+  }, []);
+
+  const tableColumns = useMemo(
+    () => buildTableColumns(columnConfig, columns),
+    [columnConfig, columns]
+  );
   const totalWidth = useMemo(
     () => tableColumns.reduce((sum, col) => sum + (col.width as number), 0),
     [tableColumns]
@@ -209,6 +437,7 @@ export default function Home() {
         searched={searched}
         onSearch={handleSearch}
         onClear={handleClear}
+        onOpenColumnSettings={() => setModalOpen(true)}
       />
 
       <div style={{ flex: 1, minHeight: 0 }}>
@@ -273,6 +502,13 @@ export default function Home() {
           </div>
         )}
       </div>
+
+      <ColumnSettingsModal
+        open={modalOpen}
+        config={columnConfig}
+        onApply={handleApplyConfig}
+        onCancel={() => setModalOpen(false)}
+      />
     </div>
   );
 }