diff --git a/pythonProject/第二章/双分支结构1.py b/pythonProject/第二章/双分支结构1.py
new file mode 100644
index 0000000..d5b7ae4
--- /dev/null
+++ b/pythonProject/第二章/双分支结构1.py
@@ -0,0 +1,5 @@
+number=eval(input("请输入幸运数字："))
+if  number==1:
+    print("小孩")
+else:
+    print("大孩子")
\ No newline at end of file
diff --git a/pythonProject/第二章/双分支结构2.py b/pythonProject/第二章/双分支结构2.py
new file mode 100644
index 0000000..5cf5bd9
--- /dev/null
+++ b/pythonProject/第二章/双分支结构2.py
@@ -0,0 +1,3 @@
+number=eval(input("请输入幸运数字："))
+result="恭喜您中奖啦!" if number==1  else "hehe!"
+print(result)
\ No newline at end of file
diff --git a/pythonProject/第二章/双分支结构3.py b/pythonProject/第二章/双分支结构3.py
new file mode 100644
index 0000000..6535d5b
--- /dev/null
+++ b/pythonProject/第二章/双分支结构3.py
@@ -0,0 +1,2 @@
+number=eval(input("请输入幸运数字："))
+print("您中奖了！" if number==1 else "hehe")
\ No newline at end of file
diff --git a/pythonProject/第二章/多分支结构2.py b/pythonProject/第二章/多分支结构2.py
new file mode 100644
index 0000000..e69de29
diff --git a/pythonProject/第二章/多分支结构3.py b/pythonProject/第二章/多分支结构3.py
new file mode 100644
index 0000000..e69de29
diff --git a/pythonProject/第二章/选择分支结构.py b/pythonProject/第二章/选择分支结构1.py
similarity index 100%
rename from pythonProject/第二章/选择分支结构.py
rename to pythonProject/第二章/选择分支结构1.py
diff --git a/pythonProject/第二章/选择分支结构2.py b/pythonProject/第二章/选择分支结构2.py
new file mode 100644
index 0000000..e69de29
diff --git a/pythonProject/第二章/分支结构2.py b/pythonProject/第二章/选择分支结构3.py
similarity index 100%
rename from pythonProject/第二章/分支结构2.py
rename to pythonProject/第二章/选择分支结构3.py