diff --git a/javaSE-day13/books.xsd b/javaSE-day13/books.xsd
new file mode 100644
index 0000000..27cbf52
--- /dev/null
+++ b/javaSE-day13/books.xsd
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    schema约束文件的根标签必须是schema
+        目标命名空间:类似java中的包名,用来在执行的xml中来导入约束文件
+        targetNamespace="http://www.example.org/books"
+-->
+<schema xmlns="http://www.w3.org/2001/XMLSchema"
+        targetNamespace="http://www.example.org/books"
+        elementFormDefault="qualified">
+    <!--
+        用来定义xml的根标签必须是books
+     -->
+    <element name="books">
+        <!--
+            声明books是复杂标签
+            复杂标签:拥有子标签或者属性的标签
+         -->
+        <complexType>
+            <!--
+            通过sequence标签指定子标签的顺序
+            用来指定books的子标签有哪些
+             -->
+            <sequence>
+                <element name="book" maxOccurs="unbounded" minOccurs="1">
+                    <!--设置book标签是复杂标签-->
+                    <complexType>
+                        <!--设置book标签的子标签顺序-->
+                        <sequence>
+                            <element name="name" type="string"></element>
+                            <element name="price" type="string"></element>
+                            <element name="author" type="string"></element>
+                        </sequence>
+                        <!--设置book标签有属性叫bid-->
+                        <attribute name="bid"></attribute>
+                    </complexType>
+                </element>
+            </sequence>
+        </complexType>
+    </element>
+</schema>
diff --git a/javaSE-day13/books_schema.xml b/javaSE-day13/books_schema.xml
new file mode 100644
index 0000000..de5ea63
--- /dev/null
+++ b/javaSE-day13/books_schema.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<books xmlns="http://www.example.org/books">
+    <book bid="j10">
+        <name>java快速入门1</name>
+        <price>99</price>
+        <author>张三</author>
+    </book>
+    <book bid="j10">
+        <name>java快速入门1</name>
+        <price>99</price>
+        <author>张三</author>
+    </book>
+    <book bid="j10">
+        <name>java快速入门1</name>
+        <price>99</price>
+        <author>张三</author>
+    </book>
+    <book bid="j10">
+        <name>java快速入门1</name>
+        <price>99</price>
+        <author>张三</author>
+    </book>
+
+</books>