diff --git a/doc/分析类图.png b/doc/分析类图.png
new file mode 100644
index 0000000..0392e51
Binary files /dev/null and b/doc/分析类图.png differ
diff --git a/doc/插入图片顺序图.png b/doc/插入图片顺序图.png
new file mode 100644
index 0000000..499dda3
Binary files /dev/null and b/doc/插入图片顺序图.png differ
diff --git a/doc/添加待办顺序图.png b/doc/添加待办顺序图.png
new file mode 100644
index 0000000..7aceec3
Binary files /dev/null and b/doc/添加待办顺序图.png differ