diff --git a/demo-playedu/playedu/playedu-admin/public/avatar/avatar.png b/demo-playedu/playedu/playedu-admin/public/avatar/avatar.png
index d65138b..98420ec 100644
Binary files a/demo-playedu/playedu/playedu-admin/public/avatar/avatar.png and b/demo-playedu/playedu/playedu-admin/public/avatar/avatar.png differ
diff --git a/demo-playedu/playedu/playedu-admin/src/assets/images/commen/avatar.png b/demo-playedu/playedu/playedu-admin/src/assets/images/commen/avatar.png
index b71724a..b7b83b6 100644
Binary files a/demo-playedu/playedu/playedu-admin/src/assets/images/commen/avatar.png and b/demo-playedu/playedu/playedu-admin/src/assets/images/commen/avatar.png differ
diff --git a/demo-playedu/playedu/playedu-admin/src/assets/thumb/avatar.png b/demo-playedu/playedu/playedu-admin/src/assets/thumb/avatar.png
index 7583e33..81101ff 100644
Binary files a/demo-playedu/playedu/playedu-admin/src/assets/thumb/avatar.png and b/demo-playedu/playedu/playedu-admin/src/assets/thumb/avatar.png differ
diff --git a/demo-playedu/playedu/playedu-api/playedu-api/src/main/resources/static/images/default_avatar.png b/demo-playedu/playedu/playedu-api/playedu-api/src/main/resources/static/images/default_avatar.png
index 8d157b7..98420ec 100644
Binary files a/demo-playedu/playedu/playedu-api/playedu-api/src/main/resources/static/images/default_avatar.png and b/demo-playedu/playedu/playedu-api/playedu-api/src/main/resources/static/images/default_avatar.png differ