diff --git a/polls/models.py b/polls/models.py
index c8d426f..bd73def 100644
--- a/polls/models.py
+++ b/polls/models.py
@@ -128,7 +128,7 @@ class TaskAddition(models.Model):
     task = models.ForeignKey(Task, on_delete=models.CASCADE)
     category = models.IntegerField(
         'category', choices=TASK_ADDITION_TYPE_CHOICES, default=1)
-    url = models.CharField('url', max_length=256, null=True, blank=True)
+    url = models.CharField('url', max_length=512, null=True, blank=True)
     file = models.FileField(
         upload_to='task/file/%Y/%m/%d/', null=True, blank=True)
     picture = models.ImageField(
@@ -172,12 +172,12 @@ class Message(models.Model):
     content = models.TextField('内容', null=True, blank=True)
     # url
     page_title = models.CharField(
-        'page_title', max_length=256, null=True, blank=True)
+        'page_title', max_length=512, null=True, blank=True)
     page_description = models.CharField(
-        'page_description', max_length=512, null=True, blank=True)
+        'page_description', max_length=1024, null=True, blank=True)
     page_image = models.CharField(
-        'page_image', max_length=256, null=True, blank=True)
-    url = models.CharField('url', max_length=256, null=True, blank=True)
+        'page_image', max_length=512, null=True, blank=True)
+    url = models.CharField('url', max_length=512, null=True, blank=True)
 
     # file
     file_title = models.CharField(
diff --git a/polls/templates/polls/monitor_statistics.html b/polls/templates/polls/monitor_statistics.html
index a1d6fb2..f8564a9 100644
--- a/polls/templates/polls/monitor_statistics.html
+++ b/polls/templates/polls/monitor_statistics.html
@@ -93,7 +93,7 @@
     var myChart3 = echarts.init(document.getElementById('chart3'));
     var option3 = {
     title: {
-        text: '政务新媒体省址、市州和县区分布',
+        text: '政务新媒体省直部门、市州和县区分布',
         subtextStyle: {
             fontSize: 16,
         },