diff --git a/pages/im/group/chat.vue b/pages/im/group/chat.vue
index 4af5da5..17cab7d 100644
--- a/pages/im/group/chat.vue
+++ b/pages/im/group/chat.vue
@@ -137,7 +137,7 @@
                     this.conversationType,
                     this.targetId,
                     0,
-                    100,
+                    20,
                     true,
                     (messages) => {
                         this.messages = messages.reverse()
diff --git a/pages/im/private/chat.vue b/pages/im/private/chat.vue
index 73c452b..6b88d15 100644
--- a/pages/im/private/chat.vue
+++ b/pages/im/private/chat.vue
@@ -119,7 +119,7 @@
                     this.conversationType,
                     this.targetId,
                     0,
-                    100,
+                    20,
                     true,
                     (messages) => {
                         this.messages = messages