diff --git a/pythonProject/数据类型/集合/5.py b/pythonProject/数据类型/集合/5.py
index de4c22f..24202c0 100644
--- a/pythonProject/数据类型/集合/5.py
+++ b/pythonProject/数据类型/集合/5.py
@@ -1,3 +1,3 @@
-s = {1,2,3}
+s = {12,1,2,3,4}
 s.pop() # 随机弹出一个元素
 print(s)
\ No newline at end of file
diff --git a/pythonProject/数据类型/集合/6.py b/pythonProject/数据类型/集合/6.py
new file mode 100644
index 0000000..ab9a38b
--- /dev/null
+++ b/pythonProject/数据类型/集合/6.py
@@ -0,0 +1,2 @@
+s = {1,2,3,4}
+s.clear()
\ No newline at end of file
diff --git a/pythonProject/数据类型/集合/7.py b/pythonProject/数据类型/集合/7.py
new file mode 100644
index 0000000..2df0458
--- /dev/null
+++ b/pythonProject/数据类型/集合/7.py
@@ -0,0 +1,8 @@
+A = {1, 2, 3}
+B = {3, 4, 5}
+print(B.union(B)) #  并集
+print(A.intersection(B))  # 交集
+print(A.difference(B)) # 在 A 不在 B
+print(A.symmetric_difference(B))  # 在 A 或 B 但不同时在两者中
+
+