diff --git a/src/main/java/com/codesdream/ase/model/activity/Activity.java b/src/main/java/com/codesdream/ase/model/activity/Activity.java
new file mode 100644
index 0000000..e63bf92
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/model/activity/Activity.java
@@ -0,0 +1,44 @@
+package com.codesdream.ase.model.activity;
+
+import com.codesdream.ase.model.file.File;
+import com.codesdream.ase.model.mark.Tag;
+import com.codesdream.ase.model.permission.User;
+import lombok.Data;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+@Entity
+@Table
+@Data
+public class Activity {
+    @Id
+    int id;
+
+    String title;
+
+    @ManyToOne
+    User Creator;
+
+    @ManyToOne
+    User Manager;
+
+    @ElementCollection
+    List<Integer> participantIds = new ArrayList<>();
+
+    @OneToMany(cascade = CascadeType.MERGE)
+    List<File> appendixes = new ArrayList<>();
+
+    Date registrationDDL;
+
+    Date creationTime = new Date();
+
+    Date realBeginDate;
+
+    Date realEndDate;
+
+    @ManyToMany(cascade = CascadeType.MERGE)
+    List<Tag> tags = new ArrayList<>();
+}
diff --git a/src/main/java/com/codesdream/ase/model/activity/Report.java b/src/main/java/com/codesdream/ase/model/activity/Report.java
new file mode 100644
index 0000000..976011f
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/model/activity/Report.java
@@ -0,0 +1,34 @@
+package com.codesdream.ase.model.activity;
+
+import com.codesdream.ase.model.file.Image;
+import com.codesdream.ase.model.permission.User;
+import lombok.Data;
+
+import javax.persistence.*;
+import java.util.Date;
+import java.util.List;
+
+@Entity
+@Table
+@Data
+public class Report {
+    @Id
+    int id;
+
+    String title;
+
+    @ManyToOne(cascade = CascadeType.MERGE)
+    User creator;
+
+    @ManyToOne(cascade = CascadeType.MERGE)
+    User manager;
+
+    Date realBeginDate;
+
+    Date realEndDate;
+
+    String context;
+
+    @ManyToMany
+    List<Image> images;
+}
diff --git a/src/main/java/com/codesdream/ase/model/file/File.java b/src/main/java/com/codesdream/ase/model/file/File.java
new file mode 100644
index 0000000..a821721
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/model/file/File.java
@@ -0,0 +1,22 @@
+package com.codesdream.ase.model.file;
+
+import lombok.Data;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.util.Date;
+
+@Entity
+@Table
+@Data
+public class File {
+    @Id
+    int id;
+
+    String title;
+
+    String url;
+
+    Date creationTime;
+}
diff --git a/src/main/java/com/codesdream/ase/model/file/Image.java b/src/main/java/com/codesdream/ase/model/file/Image.java
index 2b5e6f5..b47c078 100644
--- a/src/main/java/com/codesdream/ase/model/file/Image.java
+++ b/src/main/java/com/codesdream/ase/model/file/Image.java
@@ -9,6 +9,7 @@ public class Image {
     @GeneratedValue(strategy = GenerationType.AUTO)
     int id;
 
+    @Lob
     byte[] data;
 
     String description;
diff --git a/src/main/java/com/codesdream/ase/model/mark/Tag.java b/src/main/java/com/codesdream/ase/model/mark/Tag.java
index 7185205..94fc4f9 100644
--- a/src/main/java/com/codesdream/ase/model/mark/Tag.java
+++ b/src/main/java/com/codesdream/ase/model/mark/Tag.java
@@ -1,11 +1,14 @@
 package com.codesdream.ase.model.mark;
 
+import lombok.Data;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.Table;
 
 @Entity
 @Table
+@Data
 public class Tag {
     @Id
     int id;
diff --git a/src/main/java/com/codesdream/ase/model/student/Comment.java b/src/main/java/com/codesdream/ase/model/student/Comment.java
index c91a476..44d446e 100644
--- a/src/main/java/com/codesdream/ase/model/student/Comment.java
+++ b/src/main/java/com/codesdream/ase/model/student/Comment.java
@@ -1,9 +1,12 @@
 package com.codesdream.ase.model.student;
 
+import lombok.Data;
+
 import javax.persistence.*;
 
 @Entity
 @Table
+@Data
 public class Comment {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
diff --git a/src/main/java/com/codesdream/ase/model/student/Course.java b/src/main/java/com/codesdream/ase/model/student/Course.java
new file mode 100644
index 0000000..f5fe30c
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/model/student/Course.java
@@ -0,0 +1,18 @@
+package com.codesdream.ase.model.student;
+
+import lombok.Data;
+
+import javax.persistence.*;
+
+@Entity
+@Table
+@Data
+public class Course {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    int id;
+
+    String name;
+
+    float credit;
+}
diff --git a/src/main/java/com/codesdream/ase/model/student/Honor.java b/src/main/java/com/codesdream/ase/model/student/Honor.java
index cd328cd..0e03cd5 100644
--- a/src/main/java/com/codesdream/ase/model/student/Honor.java
+++ b/src/main/java/com/codesdream/ase/model/student/Honor.java
@@ -1,6 +1,7 @@
 package com.codesdream.ase.model.student;
 
 import com.codesdream.ase.model.file.Image;
+import lombok.Data;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -8,6 +9,7 @@ import java.util.List;
 
 @Entity
 @Table
+@Data
 public class Honor {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
diff --git a/src/main/java/com/codesdream/ase/model/student/Moment.java b/src/main/java/com/codesdream/ase/model/student/Moment.java
index 7fcfe90..bc8de2f 100644
--- a/src/main/java/com/codesdream/ase/model/student/Moment.java
+++ b/src/main/java/com/codesdream/ase/model/student/Moment.java
@@ -1,6 +1,7 @@
 package com.codesdream.ase.model.student;
 
 import com.codesdream.ase.model.file.Image;
+import lombok.Data;
 
 import javax.persistence.*;
 import java.util.ArrayList;
@@ -10,6 +11,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 // 动态/说说
 @Entity
 @Table
+@Data
 public class Moment {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
diff --git a/src/main/java/com/codesdream/ase/model/student/Notification.java b/src/main/java/com/codesdream/ase/model/student/Notification.java
index 761d1af..d88cc79 100644
--- a/src/main/java/com/codesdream/ase/model/student/Notification.java
+++ b/src/main/java/com/codesdream/ase/model/student/Notification.java
@@ -1,11 +1,14 @@
 package com.codesdream.ase.model.student;
 
+import lombok.Data;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.Table;
 
 @Entity
 @Table
+@Data
 public class Notification {
     @Id
     int id;
diff --git a/src/main/java/com/codesdream/ase/model/student/Student.java b/src/main/java/com/codesdream/ase/model/student/Student.java
index 84ceb34..770792a 100644
--- a/src/main/java/com/codesdream/ase/model/student/Student.java
+++ b/src/main/java/com/codesdream/ase/model/student/Student.java
@@ -2,6 +2,8 @@ package com.codesdream.ase.model.student;
 
 import com.codesdream.ase.model.mark.Tag;
 import com.codesdream.ase.model.permission.User;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
 
 import javax.annotation.Generated;
 import javax.persistence.*;
@@ -9,6 +11,8 @@ import java.util.List;
 
 @Entity
 @Table
+@Data
+@EqualsAndHashCode(callSuper = false)
 public class Student extends User {
     @Column(nullable = false)
     String studentId;
@@ -18,5 +22,4 @@ public class Student extends User {
 
     String profilePicture;
 
-
 }
diff --git a/src/main/java/com/codesdream/ase/model/student/StudentCourse.java b/src/main/java/com/codesdream/ase/model/student/StudentCourse.java
new file mode 100644
index 0000000..8b8d347
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/model/student/StudentCourse.java
@@ -0,0 +1,28 @@
+package com.codesdream.ase.model.student;
+
+import lombok.Data;
+
+import javax.persistence.*;
+import java.util.Date;
+
+@Entity
+@Table
+@Data
+public class StudentCourse {
+    @Id
+    int id;
+
+    @OneToOne(cascade = CascadeType.MERGE)
+    Student student;
+
+    @OneToOne(cascade = CascadeType.MERGE)
+    Course course;
+
+    @Column(nullable = false)
+    float score;
+
+    boolean isFailed;
+
+    Date finishedDate;
+
+}