diff --git a/demo-playedu/playedu/playedu-admin/public/avatar/avatar.png b/demo-playedu/playedu/playedu-admin/public/avatar/avatar.png
index 98420ec..8ef0c9e 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 b7b83b6..8ef0c9e 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 81101ff..8ef0c9e 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 98420ec..8ef0c9e 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
diff --git a/demo-playedu/playedu/playedu-h5/src/assets/thumb/avatar.png b/demo-playedu/playedu/playedu-h5/src/assets/thumb/avatar.png
index 62c8164..8ef0c9e 100644
Binary files a/demo-playedu/playedu/playedu-h5/src/assets/thumb/avatar.png and b/demo-playedu/playedu/playedu-h5/src/assets/thumb/avatar.png differ
diff --git a/demo-playedu/playedu/playedu-pc/src/assets/images/commen/avatar.png b/demo-playedu/playedu/playedu-pc/src/assets/images/commen/avatar.png
index f71190f..8ef0c9e 100644
Binary files a/demo-playedu/playedu/playedu-pc/src/assets/images/commen/avatar.png and b/demo-playedu/playedu/playedu-pc/src/assets/images/commen/avatar.png differ
diff --git a/demo-playedu/playedu/playedu-pc/src/assets/thumb/avatar.png b/demo-playedu/playedu/playedu-pc/src/assets/thumb/avatar.png
index 62c8164..8ef0c9e 100644
Binary files a/demo-playedu/playedu/playedu-pc/src/assets/thumb/avatar.png and b/demo-playedu/playedu/playedu-pc/src/assets/thumb/avatar.png differ