diff --git a/polls/models.py b/polls/models.py
index 81fd37a..0cc2a29 100644
--- a/polls/models.py
+++ b/polls/models.py
@@ -37,7 +37,7 @@ class Notice(models.Model):
     id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     content = models.CharField('内容', max_length=256, null=False)
-    is_read = models.BooleanField('是否删除', default=False)
+    is_read = models.BooleanField('是否阅读', default=False)
     added = models.DateTimeField(auto_now_add=True)
     updated = models.DateTimeField(auto_now=True)
 
@@ -52,6 +52,62 @@ class Notice(models.Model):
         return self.content + ':' + self.user.username
 
 
+class Task(models.Model):
+    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
+    created_by = models.ForeignKey(User, on_delete=models.NULL)
+    groups = models.ManyToManyField(Group)
+    content = models.TextField('内容', null=True, blank=True)
+    added = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ["-added"]
+
+
+class TaskAddition(models.Model):
+    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
+    task = models.ForeignKey(Task, on_delete=models.CASCADE)
+    category = models.IntegerField(
+        'type', choices=MESSAGE_TYPE_CHOICES, default=0)
+    url = models.CharField('url', max_length=256, null=True, blank=True)
+    file = models.FileField(
+        upload_to='task/file/%Y/%m/%d/', null=True, blank=True)
+    picture = models.ImageField(
+        upload_to='task/image/%Y/%m/%d/', null=True, blank=True)
+
+TASK_RECORD_STATUS_CHOICES = (
+    (0, '未完成'),
+    (1, '完成'),
+)
+
+
+class TaskRecord(models.Model):
+    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    status = models.IntegerField(
+        '状态', choices=TASK_RECORD_STATUS_CHOICES, default=0)
+    added = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+
+class Message(models.Model):
+    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
+    send_from = models.ForeignKey(User, on_delete=models.CASCADE)
+    send_to = models.ForeignKey(Group, on_delete=models.CASCADE)
+    content = models.TextField('内容', null=True, blank=True)
+    task = models.ForeignKey(Task, on_delete=models.CASCADE)
+    addition = models.ForeignKey(MessageAddition, on_delete=models.CASCADE)
+
+    added = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ["-added"]
+
+    def __str__(self):
+        return self.send_from + ':' + self.send_to
+
+
 MESSAGE_TYPE_CHOICES = (
     (0, 'url'),
     (1, 'file'),
@@ -59,44 +115,38 @@ MESSAGE_TYPE_CHOICES = (
 )
 
 
-class Message(models.Model):
+class MessageAddition(models.Model):
     id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
     category = models.IntegerField(
         'category', choices=MESSAGE_TYPE_CHOICES, default=0)
-    send_from = models.ForeignKey(User, on_delete=models.CASCADE)
-    send_to = models.ForeignKey(Group, on_delete=models.CASCADE)
-    added = models.DateTimeField(auto_now_add=True)
-    updated = models.DateTimeField(auto_now=True)
+    message = models.ForeignKey(Message, on_delete=models.CASCADE)
 
     class Meta:
         abstract = True
-        ordering = ["-added"]
-
-    def __str__(self):
-        return self.send_from + ':' + self.send_to
 
 
-class URLMessage(Message):
+class URLMessage(MessageAddition):
     title = models.CharField('title', max_length=256, null=False)
     description = models.CharField('description', max_length=512, null=False)
     image = models.CharField('image', max_length=256, null=True, blank=True)
     url = models.CharField('url', max_length=256, null=True, blank=True)
 
 
-class FileMessage(Message):
+class FileMessage(MessageAddition):
     title = models.CharField('title', max_length=256, null=False)
-    file = models.FileField(
-        upload_to='message/file/%Y/%m/%d/', null=True, blank=True)
+    file = models.CharField('file', max_length=256, null=False)
 
 
-class ImageMessage(Message):
-    file = models.FileField(
-        upload_to='resources/image/%Y/%m/%d/', null=True, blank=True)
+class ImageMessage(MessageAddition):
+    title = models.CharField('title', max_length=256, null=False)
+    picture = models.CharField('picture', max_length=256, null=False)
 
 
-class MessageRecord(models.Model):
-    pass
-
-
-class ChatRecord(models.Model):
-    pass
+class GroupRecord(models.Model):
+    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    group = models.ForeignKey(Group, on_delete=models.CASCADE)
+    enter_at = models.DateTimeField(auto_now=True)
+    leave_at = models.DateTimeField(auto_now=True)
+    added = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
diff --git a/polls/utils.py b/polls/utils.py
index 4cef0a4..080e725 100644
--- a/polls/utils.py
+++ b/polls/utils.py
@@ -94,6 +94,13 @@ def get_room_or_error(room_id, user):
         raise ClientError("USER_HAS_TO_LOGIN")
 
 
+def model_to_dict(o, fields):
+    result = dict()
+    for f in fields:
+        result[f] = o.f
+    return result
+
+
 if __name__ == '__main__':
     # sent_sms_code('13993199566')
     og_title, og_description, og_url, og_image = parse(
diff --git a/polls/views/task.py b/polls/views/task.py
new file mode 100644
index 0000000..9d09a98
--- /dev/null
+++ b/polls/views/task.py
@@ -0,0 +1,30 @@
+from django.shortcuts import render
+from django.http import HttpResponse, JsonResponse
+from django.views.decorators.csrf import csrf_exempt
+from django.forms.models import model_to_dict
+import datetime
+
+from polls.decorators import polls_login_required
+from polls.models import Task
+from django.core.exceptions import ObjectDoesNotExist
+
+
+@csrf_exempt
+@polls_login_required
+def tasks(request):
+    if request.method == 'POST':
+        return HttpResponse(status=405)
+    id = request.user.id
+    tasks = Task.objects.filter(created_by__id=id)
+    results = []
+    for o in tasks:
+        result = dict()
+        result['id'] = o.id
+        m = []
+        for g in o.groups:
+            n = model_to_dict(g, ['id', 'name'])
+            m.append(n)
+        result['groups'] = m
+        result['added'] = o.added.strftime("%Y-%m-%d %H:%M:%S")
+        results.append(result)
+    return JsonResponse(results, safe=False)