diff --git a/src/main/java/com/zhangmeng/online/exam/dao/OptionDao.java b/src/main/java/com/zhangmeng/online/exam/dao/OptionDao.java
new file mode 100644
index 0000000..b05b7d5
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/OptionDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.Option;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:14
+ * @version: 1.0
+ */
+public interface OptionDao extends JpaRepository<Option, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/dao/PermissionDao.java b/src/main/java/com/zhangmeng/online/exam/dao/PermissionDao.java
new file mode 100644
index 0000000..a5b2643
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/PermissionDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.Permission;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:04
+ * @version: 1.0
+ */
+public interface PermissionDao extends JpaRepository<Permission, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/dao/ProfessionDao.java b/src/main/java/com/zhangmeng/online/exam/dao/ProfessionDao.java
new file mode 100644
index 0000000..897421e
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/ProfessionDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.Profession;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:26
+ * @version: 1.0
+ */
+public interface ProfessionDao extends JpaRepository<Profession, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/dao/QuestionDao.java b/src/main/java/com/zhangmeng/online/exam/dao/QuestionDao.java
new file mode 100644
index 0000000..cb73e0b
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/QuestionDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.Question;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:15
+ * @version: 1.0
+ */
+public interface QuestionDao extends JpaRepository<Question, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/dao/RoleDao.java b/src/main/java/com/zhangmeng/online/exam/dao/RoleDao.java
new file mode 100644
index 0000000..c42c413
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/RoleDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.Role;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:04
+ * @version: 1.0
+ */
+public interface RoleDao extends JpaRepository<Role, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/dao/SubjectDao.java b/src/main/java/com/zhangmeng/online/exam/dao/SubjectDao.java
new file mode 100644
index 0000000..293674e
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/SubjectDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.Subject;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:19
+ * @version: 1.0
+ */
+public interface SubjectDao extends JpaRepository<Subject, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/dao/UserDao.java b/src/main/java/com/zhangmeng/online/exam/dao/UserDao.java
new file mode 100644
index 0000000..d188eb7
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/dao/UserDao.java
@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:03
+ * @version: 1.0
+ */
+public interface UserDao extends JpaRepository<User, Long> {
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/Option.java b/src/main/java/com/zhangmeng/online/exam/entity/Option.java
new file mode 100644
index 0000000..74a8acb
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/Option.java
@@ -0,0 +1,41 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+/**
+ *
+ * @Description: 选项
+ * @author zm
+ * @date 2025/2/28 16:10
+ * @version: 1.0
+ */
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "option")
+public class Option extends BaseEntity<Long> {
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    private Question question;
+
+    private String optionName;//选项A
+
+    private String optionContent;//选项内容
+
+    private Integer optionScore;//选项得分
+
+    private Integer optionOrder;//选项顺序
+
+    private Boolean isAnswer;//是否是正确答案
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/Permission.java b/src/main/java/com/zhangmeng/online/exam/entity/Permission.java
new file mode 100644
index 0000000..e37823f
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/Permission.java
@@ -0,0 +1,46 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.ManyToMany;
+import javax.persistence.Table;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * @author zm
+ * @date 2025/2/28 14:46
+ * @version: 1.0
+ */
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "permission")
+public class Permission extends BaseEntity<Long> {
+
+
+    private String name;
+
+    private String icon;
+
+    private String url;
+
+    private String description;
+
+    private Integer sort;
+
+    @Column(name = "frontpath")
+    private String frontpath;
+
+    @ManyToMany(mappedBy = "permissions")
+    private Set<Role> roles = new HashSet<>();
+
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/Profession.java b/src/main/java/com/zhangmeng/online/exam/entity/Profession.java
new file mode 100644
index 0000000..ad880ef
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/Profession.java
@@ -0,0 +1,33 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Entity;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * description: 职业实体类
+ * @author zm
+ * @date 2025/2/28 16:24
+ * @version: 1.0
+ */
+
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "profession")
+public class Profession extends BaseEntity<Long> {
+
+
+    @OneToMany(mappedBy = "profession")
+    private List<Subject> subjects = new ArrayList<>();
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/Question.java b/src/main/java/com/zhangmeng/online/exam/entity/Question.java
new file mode 100644
index 0000000..212facd
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/Question.java
@@ -0,0 +1,44 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author zm
+ * @date 2025/2/28 16:06
+ * @version: 1.0
+ */
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "question")
+public class Question extends BaseEntity<Long> {
+
+    public enum Type {
+        SINGLE_CHOICE,//单选题
+        MULTIPLE_CHOICE,//多选题
+        JUDGMENT,//判断题
+        SHORT_ANSWER,//简答题
+        TRUE_OR_FALSE,//判断题
+        NUMERICAL,//计算题
+    }
+
+    private String name;
+
+    private Type type;
+
+    @OneToMany(mappedBy = "question")
+    private List<Option> options = new ArrayList<>();
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    private Subject subject;
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/Role.java b/src/main/java/com/zhangmeng/online/exam/entity/Role.java
new file mode 100644
index 0000000..d442381
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/Role.java
@@ -0,0 +1,37 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * @author zm
+ * @date 2025/2/28 14:45
+ * @version: 1.0
+ */
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "role")
+public class Role extends BaseEntity<Long> {
+
+    private String name;
+
+    private String description;
+
+    @ManyToMany(mappedBy = "roles")
+    private Set<User> users = new HashSet<>();
+
+    @ManyToMany(fetch = FetchType.LAZY)
+    @JoinTable(name = "role_permission", joinColumns = @JoinColumn(name = "role_id"), inverseJoinColumns = @JoinColumn(name = "permission_id"))
+    private Set<Permission> permissions = new HashSet<>();
+
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/Subject.java b/src/main/java/com/zhangmeng/online/exam/entity/Subject.java
new file mode 100644
index 0000000..d9a245d
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/Subject.java
@@ -0,0 +1,38 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * description: 学科
+ * @author zm
+ * @date 2025/2/28 16:18
+ * @version: 1.0
+ */
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "subject")
+public class Subject extends BaseEntity<Long> {
+
+    private String name;//学科名称
+
+    private String code;//学科代码
+
+    private String description;//学科描述
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    private Profession profession;//职业
+
+    @OneToMany(mappedBy = "subject")
+    private List<Question> questions = new ArrayList<>();//题目列表
+}
diff --git a/src/main/java/com/zhangmeng/online/exam/entity/User.java b/src/main/java/com/zhangmeng/online/exam/entity/User.java
new file mode 100644
index 0000000..351707f
--- /dev/null
+++ b/src/main/java/com/zhangmeng/online/exam/entity/User.java
@@ -0,0 +1,38 @@
+package com.zhangmeng.online.exam.entity;
+
+import com.zhangmeng.online.exam.entity.baseEntity.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * @author zm
+ * @date 2025/2/28 14:45
+ * @version: 1.0
+ */
+@NoArgsConstructor
+@Data
+@AllArgsConstructor
+@Entity
+@EqualsAndHashCode(callSuper = false)
+@Table(name = "user")
+public class User extends BaseEntity<Long> {
+
+    private String username;
+
+    private String password;
+
+    private String email;
+
+    private String phone;
+
+    @ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST, CascadeType.MERGE})
+    @JoinTable(name = "user_role", joinColumns = @JoinColumn(name = "user_id", referencedColumnName = "id"), inverseJoinColumns = @JoinColumn(name = "role_id", referencedColumnName = "id"))
+    private Set<Role> roles = new HashSet<>();
+
+}