diff --git a/222.txt b/222.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/demo.txt b/demo.txt
deleted file mode 100644
index d72af31..0000000
--- a/demo.txt
+++ /dev/null
@@ -1 +0,0 @@
-asd
diff --git a/doc/软件需求模型.md b/doc/软件需求模型.md
index 5cffbe8..2baa998 100644
--- a/doc/软件需求模型.md
+++ b/doc/软件需求模型.md
@@ -257,3 +257,4 @@
 
 ## 三、分析类图
 
+![分析类图](https://s2.loli.net/2022/09/19/KVmLBOTpaQRlJiy.png)
diff --git a/model/新建文本文档.txt b/model/新建文本文档.txt
new file mode 100644
index 0000000..562890b
--- /dev/null
+++ b/model/新建文本文档.txt
@@ -0,0 +1 @@
+d1
\ No newline at end of file