diff --git a/lib/providers/task_provider.dart b/lib/providers/task_provider.dart
index 97c050b..0c58d0b 100644
--- a/lib/providers/task_provider.dart
+++ b/lib/providers/task_provider.dart
@@ -9,11 +9,13 @@ class Task {
   final String title;
   final String description;
   final DateTime dateTime;
+  bool isCompleted;
 
   Task({
     required this.title,
     required this.description,
     required this.dateTime,
+    this.isCompleted = false,
   });
 }
 
@@ -25,4 +27,19 @@ class TaskListNotifier extends StateNotifier<List<Task>> {
         Task(title: title, description: description, dateTime: DateTime.now());
     state = [...state, newTask];
   }
+
+  void toggleTaskCompletion(int index) {
+    state = [
+      for (int i = 0; i < state.length; i++)
+        if (i == index)
+          Task(
+            title: state[i].title,
+            description: state[i].description,
+            dateTime: state[i].dateTime,
+            isCompleted: !state[i].isCompleted,
+          )
+        else
+          state[i],
+    ];
+  }
 }
diff --git a/lib/screens/home.dart b/lib/screens/home.dart
index fd1f2d9..45e2451 100644
--- a/lib/screens/home.dart
+++ b/lib/screens/home.dart
@@ -11,7 +11,11 @@ class MyHome extends ConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     final theme = Theme.of(context);
     final taskList = ref.watch(taskListProvider);
-    final Map<String, String> taskData = {'title': '', 'description': ''};
+    final Map<String, String> taskData = {
+      'title': '',
+      'description': '',
+      'dateTime': ''
+    };
 
     void addTask() {
       ref.read(taskListProvider.notifier).addTask(
@@ -49,10 +53,35 @@ class MyHome extends ConsumerWidget {
                       const EdgeInsets.symmetric(vertical: 3, horizontal: 16),
                   child: Card(
                     child: ListTile(
-                      leading: const Icon(Icons.radio_button_unchecked),
-                      title: Text(task.title),
+                      leading: IconButton(
+                        icon: Icon(
+                          task.isCompleted
+                              ? Icons.check_circle
+                              : Icons.radio_button_unchecked,
+                          color: task.isCompleted ? Colors.green : null,
+                        ),
+                        onPressed: () {
+                          ref
+                              .read(taskListProvider.notifier)
+                              .toggleTaskCompletion(index);
+                        },
+                      ),
+                      title: Text(
+                        task.title,
+                        style: TextStyle(
+                          decoration: task.isCompleted
+                              ? TextDecoration.lineThrough
+                              : null,
+                          color: task.isCompleted ? Colors.grey : null,
+                        ),
+                      ),
                       subtitle: Text(
-                        task.description,
+                        '${task.description}\n${task.dateTime.month}월 ${task.dateTime.day}일 까지',
+                        style: TextStyle(
+                          color: task.isCompleted
+                              ? Colors.grey.withOpacity(0.5)
+                              : null,
+                        ),
                       ),
                     ),
                   ),
diff --git a/lib/widgets/add_task_bottomsheet.dart b/lib/widgets/add_task_bottomsheet.dart
index bc27320..a1873f0 100644
--- a/lib/widgets/add_task_bottomsheet.dart
+++ b/lib/widgets/add_task_bottomsheet.dart
@@ -11,6 +11,32 @@ class AddTaskBottomSheet extends ConsumerWidget {
     required this.onPressed,
   });
 
+  Future<void> _selectDate(BuildContext context) async {
+    final DateTime? picked = await showDatePicker(
+      context: context,
+      initialDate: DateTime.now(),
+      firstDate: DateTime(2000),
+      lastDate: DateTime(2101),
+      builder: (context, child) {
+        return Theme(
+          data: ThemeData.dark().copyWith(
+            colorScheme: ColorScheme.dark(
+              primary: Colors.purple, // Header background color
+              onPrimary: Colors.white, // Header text color
+              surface: Colors.grey[800]!, // Background color of the calendar
+              onSurface: Colors.white, // Text color
+            ),
+            dialogBackgroundColor: Colors.black,
+          ),
+          child: child!,
+        );
+      },
+    );
+    if (picked != null) {
+      taskData['dateTime'] = picked.toIso8601String(); // Save the selected date
+    }
+  }
+
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     return Container(
@@ -56,7 +82,12 @@ class AddTaskBottomSheet extends ConsumerWidget {
           Row(
             mainAxisAlignment: MainAxisAlignment.spaceAround,
             children: [
-              // Icon(Icons.timer, size: 30),
+              IconButton(
+                icon: const Icon(Icons.calendar_today, size: 30),
+                onPressed: () {
+                  _selectDate(context);
+                },
+              ),
               // Icon(Icons.location_on, size: 30),
               // Icon(Icons.flag, size: 30),
               IconButton(