diff --git a/src/app/[teamid]/_domain/apis/task.ts b/src/app/[teamid]/_domain/apis/task.ts
new file mode 100644
index 0000000..e470b30
--- /dev/null
+++ b/src/app/[teamid]/_domain/apis/task.ts
@@ -0,0 +1,18 @@
+import { requestJson } from '@/shared/apis/groups/http';
+import type { Task } from './types';
+
+export function updateTask(
+  groupId: number,
+  taskListId: number,
+  taskId: number,
+  data: { done?: boolean; name?: string; description?: string },
+): Promise<Task> {
+  return requestJson<Task>(
+    `/groups/${groupId}/task-lists/${taskListId}/tasks/${taskId}`,
+    '할 일 수정 실패',
+    {
+      method: 'PATCH',
+      body: JSON.stringify(data),
+    },
+  );
+}
diff --git a/src/app/[teamid]/_domain/components/Kanban/KanbanBoard.tsx b/src/app/[teamid]/_domain/components/Kanban/KanbanBoard.tsx
index f566702..4f70511 100644
--- a/src/app/[teamid]/_domain/components/Kanban/KanbanBoard.tsx
+++ b/src/app/[teamid]/_domain/components/Kanban/KanbanBoard.tsx
@@ -34,6 +34,7 @@ export default function KanbanBoard({ groupId, teamId, taskLists }: KanbanBoardP
     handleCardClick,
     handleDeleteTask,
     handleUpdateTask,
+    handleStatusChange,
     handleAddTask,
     handleAddListSubmit,
     handleAddListClose,
@@ -44,6 +45,7 @@ export default function KanbanBoard({ groupId, teamId, taskLists }: KanbanBoardP
     tasks,
     setTasks,
     COLUMN_IDS,
+    handleStatusChange,
   );
 
   return (
diff --git a/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.module.css b/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.module.css
index ae1a2bc..34a14e8 100644
--- a/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.module.css
+++ b/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.module.css
@@ -36,7 +36,7 @@
   display: flex;
   flex-direction: column;
   gap: 16px;
-  min-height: 40px;
+  min-height: 200px;
   border-radius: 12px;
   padding: 4px;
   transition: background 0.15s;
@@ -45,3 +45,11 @@
 .isOver {
   background: var(--color-brand-secondary);
 }
+
+/* 드롭 가이드: 드래그 중인 아이템과 동일한 border-radius(12px)로 표시 */
+.dropGuide {
+  border-radius: 12px;
+  box-shadow: inset 0 0 0 2px var(--color-brand-primary);
+  background-color: var(--color-brand-secondary);
+  flex-shrink: 0;
+}
diff --git a/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.tsx b/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.tsx
index 3304aa7..78ac523 100644
--- a/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.tsx
+++ b/src/app/[teamid]/_domain/components/Kanban/KanbanColumn.tsx
@@ -1,7 +1,7 @@
 'use client';
 
 import { memo } from 'react';
-import { useDroppable } from '@dnd-kit/core';
+import { useDroppable, useDndContext } from '@dnd-kit/core';
 import { SortableContext, verticalListSortingStrategy } from '@dnd-kit/sortable';
 
 import KanbanItem from './KanbanItem';
@@ -34,8 +34,21 @@ function KanbanColumn({
   onUpdateTask,
 }: KanbanColumnProps) {
   const { setNodeRef, isOver } = useDroppable({ id: status });
+  const { active, over } = useDndContext();
   const itemIds = tasks.map((t) => t.id);
 
+  // 현재 컬럼의 아이템이 드래그 중인지 확인
+  const isActiveFromThisColumn = active ? tasks.some((t) => t.id === String(active.id)) : false;
+
+  // 다른 컬럼 아이템을 이 컬럼의 기존 아이템 위로 드래그 중인지 확인
+  const isOverThisColumnItem = over ? tasks.some((t) => t.id === String(over.id)) : false;
+
+  // 다른 컬럼에서 이 컬럼으로 드래그 진입 시 드롭 가이드 표시
+  const showDropGuide = !!active && !isActiveFromThisColumn && (isOver || isOverThisColumnItem);
+
+  // 드래그 중인 아이템의 초기 높이 (가이드 크기를 아이템과 동일하게 맞추기 위함)
+  const draggedItemHeight = active?.rect.current.initial?.height ?? 54;
+
   return (
     <div className={styles.column}>
       <div className={styles.columnHeader}>
@@ -63,6 +76,9 @@ function KanbanColumn({
               onUpdateTask={onUpdateTask}
             />
           ))}
+          {showDropGuide && (
+            <div className={styles.dropGuide} style={{ height: draggedItemHeight }} />
+          )}
         </div>
       </SortableContext>
     </div>
diff --git a/src/app/[teamid]/_domain/components/Kanban/KanbanItem.module.css b/src/app/[teamid]/_domain/components/Kanban/KanbanItem.module.css
index 85900e9..be5e960 100644
--- a/src/app/[teamid]/_domain/components/Kanban/KanbanItem.module.css
+++ b/src/app/[teamid]/_domain/components/Kanban/KanbanItem.module.css
@@ -10,6 +10,18 @@
   position: relative;
 }
 
+/* 드래그 중인 아이템: TodoCard와 동일한 border-radius(12px)로 테두리 플레이스홀더 표시 */
+.itemDragging {
+  border-radius: 12px;
+  box-shadow: inset 0 0 0 2px var(--color-brand-primary);
+  background-color: var(--color-brand-secondary);
+}
+
+/* 드래그 중인 아이템의 내용을 숨기되 공간은 유지 */
+.cardWrapperDragging {
+  visibility: hidden;
+}
+
 .todoCard {
   flex: 1;
   /* 접힘/펼침 전환 시 타이틀 수평 시프팅 방지: folded 상태와 패딩·보더 두께 통일 */
diff --git a/src/app/[teamid]/_domain/components/Kanban/KanbanItem.tsx b/src/app/[teamid]/_domain/components/Kanban/KanbanItem.tsx
index 123939e..b34c9a8 100644
--- a/src/app/[teamid]/_domain/components/Kanban/KanbanItem.tsx
+++ b/src/app/[teamid]/_domain/components/Kanban/KanbanItem.tsx
@@ -40,7 +40,6 @@ function KanbanItem({
   const style = {
     transform: CSS.Transform.toString(transform),
     transition,
-    opacity: isDragging ? 0.4 : 1,
   };
 
   // 메뉴 외부 클릭 시 닫기
@@ -101,11 +100,14 @@ function KanbanItem({
     <div
       ref={setNodeRef}
       style={style}
-      className={styles.item}
+      className={`${styles.item} ${isDragging ? styles.itemDragging : ''}`}
       onClick={handleContainerClick}
       {...(isEditing ? {} : listeners)}
     >
-      <div ref={containerRef} className={styles.cardWrapper}>
+      <div
+        ref={containerRef}
+        className={`${styles.cardWrapper} ${isDragging ? styles.cardWrapperDragging : ''}`}
+      >
         {isEditing ? (
           <div className={styles.editCard}>
             <input
diff --git a/src/app/[teamid]/_domain/hooks/useKanbanDnd.ts b/src/app/[teamid]/_domain/hooks/useKanbanDnd.ts
index 6ce9aa8..84a9914 100644
--- a/src/app/[teamid]/_domain/hooks/useKanbanDnd.ts
+++ b/src/app/[teamid]/_domain/hooks/useKanbanDnd.ts
@@ -16,6 +16,7 @@ export function useKanbanDnd(
   tasks: KanbanTask[],
   setTasks: React.Dispatch<React.SetStateAction<KanbanTask[]>>,
   columnIds: KanbanStatus[],
+  onStatusChange?: (taskId: string, fromStatus: KanbanStatus, toStatus: KanbanStatus) => void,
 ) {
   const [activeTask, setActiveTask] = useState<KanbanTask | null>(null);
 
@@ -41,9 +42,13 @@ export function useKanbanDnd(
     // over가 컬럼인 경우 (빈 컬럼에 드롭)
     const isOverColumn = columnIds.includes(overId as KanbanStatus);
     if (isOverColumn) {
-      setTasks((prev) =>
-        prev.map((t) => (t.id === activeId ? { ...t, status: overId as KanbanStatus } : t)),
-      );
+      const activeTaskItem = tasks.find((t) => t.id === activeId);
+      if (activeTaskItem && activeTaskItem.status !== overId) {
+        const fromStatus = activeTaskItem.status;
+        const toStatus = overId as KanbanStatus;
+        setTasks((prev) => prev.map((t) => (t.id === activeId ? { ...t, status: toStatus } : t)));
+        onStatusChange?.(activeId, fromStatus, toStatus);
+      }
       return;
     }
 
@@ -63,9 +68,10 @@ export function useKanbanDnd(
       });
     } else {
       // 다른 컬럼으로 이동
-      setTasks((prev) =>
-        prev.map((t) => (t.id === activeId ? { ...t, status: overTaskItem.status } : t)),
-      );
+      const fromStatus = activeTaskItem.status;
+      const toStatus = overTaskItem.status;
+      setTasks((prev) => prev.map((t) => (t.id === activeId ? { ...t, status: toStatus } : t)));
+      onStatusChange?.(activeId, fromStatus, toStatus);
     }
   };
 
diff --git a/src/app/[teamid]/_domain/hooks/useKanbanTasks.ts b/src/app/[teamid]/_domain/hooks/useKanbanTasks.ts
index 6cb3ca5..e8460f1 100644
--- a/src/app/[teamid]/_domain/hooks/useKanbanTasks.ts
+++ b/src/app/[teamid]/_domain/hooks/useKanbanTasks.ts
@@ -1,16 +1,35 @@
 import { useState, useCallback, useMemo } from 'react';
 import { useRouter } from 'next/navigation';
-import { useQueries } from '@tanstack/react-query';
+import { useQueries, useQueryClient } from '@tanstack/react-query';
 import type { KanbanTask, KanbanStatus, TaskItem } from '../interfaces/team';
 import type { TaskList } from '../apis/types';
 import { taskListQueryOptions } from '../queries/useTaskListQuery';
 import { useCreateTaskListMutation } from '../queries/useCreateTaskListMutation';
 import { useDeleteTaskListMutation } from '../queries/useDeleteTaskListMutation';
+import { updateTask } from '../apis/task';
+import { taskListKeys } from '../queries/queryKeys';
 
 function getTodayDateString(): string {
   return new Date().toISOString().split('T')[0];
 }
 
+// localStorage에 컬럼 위치를 저장하여 새로고침 후에도 유지
+function getStoredStatus(groupId: number, taskListId: number): KanbanStatus | null {
+  try {
+    const stored = localStorage.getItem(`kanban-status-${groupId}-${taskListId}`);
+    if (stored === 'todo' || stored === 'inProgress' || stored === 'done') return stored;
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+function setStoredStatus(groupId: number, taskListId: number, status: KanbanStatus): void {
+  try {
+    localStorage.setItem(`kanban-status-${groupId}-${taskListId}`, status);
+  } catch {}
+}
+
 function deriveStatus(items: TaskItem[]): KanbanStatus {
   if (items.length === 0) return 'todo';
   const doneCount = items.filter((item) => item.checked).length;
@@ -25,6 +44,7 @@ export function useKanbanTasks(
   taskLists: Omit<TaskList, 'tasks'>[],
 ) {
   const router = useRouter();
+  const queryClient = useQueryClient();
   const today = getTodayDateString();
 
   // 각 할 일 목록의 태스크를 병렬로 조회
@@ -44,11 +64,13 @@ export function useKanbanTasks(
         text: task.name,
         checked: task.doneAt !== null,
       }));
+      // localStorage 저장값 우선, 없으면 item 완료 비율로 파생
+      const storedStatus = getStoredStatus(groupId, tl.id);
       return {
         id: String(tl.id),
         title: tl.name,
         items,
-        status: deriveStatus(items),
+        status: storedStatus ?? deriveStatus(items),
       };
     });
     // eslint-disable-next-line react-hooks/exhaustive-deps
@@ -118,6 +140,46 @@ export function useKanbanTasks(
   // 수정 기능은 할 일 목록 상세 페이지에서 처리
   const handleUpdateTask = useCallback(() => {}, []);
 
+  // 드래그로 컬럼 이동 시 컬럼 위치를 저장하고, 완료/할 일 이동 시 API로 완료 상태 동기화
+  const handleStatusChange = useCallback(
+    async (taskId: string, fromStatus: KanbanStatus, toStatus: KanbanStatus) => {
+      if (fromStatus === toStatus) return;
+
+      const task = tasks.find((t) => t.id === taskId);
+      const taskListId = Number(taskId);
+
+      // 항목 유무와 관계없이 컬럼 위치를 localStorage에 저장
+      setStoredStatus(groupId, taskListId, toStatus);
+
+      // 진행중으로 이동하거나 항목이 없으면 API 호출 없이 종료 (위치는 이미 저장됨)
+      if (!task || task.items.length === 0 || toStatus === 'inProgress') return;
+
+      try {
+        if (toStatus === 'done') {
+          // 모든 항목 완료 처리
+          await Promise.all(
+            task.items.map((item) =>
+              updateTask(groupId, taskListId, Number(item.id), { done: true }),
+            ),
+          );
+        } else if (toStatus === 'todo') {
+          // 모든 항목 미완료 처리
+          await Promise.all(
+            task.items.map((item) =>
+              updateTask(groupId, taskListId, Number(item.id), { done: false }),
+            ),
+          );
+        }
+      } finally {
+        // 성공/실패 관계없이 쿼리를 무효화하여 실제 서버 상태로 동기화
+        await queryClient.invalidateQueries({
+          queryKey: taskListKeys.detail(groupId, taskListId, today),
+        });
+      }
+    },
+    [tasks, groupId, today, queryClient],
+  );
+
   return {
     tasks,
     setTasks,
@@ -127,6 +189,7 @@ export function useKanbanTasks(
     handleCardClick,
     handleDeleteTask,
     handleUpdateTask,
+    handleStatusChange,
     handleAddTask,
     handleAddListSubmit,
     handleAddListClose,