diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Carousel.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Carousel.java
index b2c0e27..fb4e545 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Carousel.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Carousel.java
@@ -54,7 +54,7 @@ public class Carousel extends BaseEntity {
     @Schema(description = "标题")
     private String title;
 
-    @ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
+    @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "storage_id", referencedColumnName = "id")
     @Comment("图片文件")
     @Schema(description = "图片文件")
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java
index 9ea1b93..67e7dfc 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Course.java
@@ -62,19 +62,19 @@ public class Course extends BaseEntity {
     @Schema(description = "课程价格")
     private BigDecimal price;
 
-    @ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
+    @ManyToOne(cascade = {CascadeType.PERSIST}, fetch = FetchType.EAGER)
     @JoinColumn(name = "course_description_storage_id", referencedColumnName = "id")
     @Comment("课程简介文件")
     @Schema(description = "课程简介文件")
     private Storage courseDescriptionStorage;
 
-    @ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
+    @ManyToOne(cascade = {CascadeType.PERSIST}, fetch = FetchType.EAGER)
     @JoinColumn(name = "course_media_storage_id", referencedColumnName = "id")
     @Comment("课程音视频文件")
     @Schema(description = "课程音视频文件")
     private Storage courseMediaStorage;
 
-    @ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
+    @ManyToOne(cascade = {CascadeType.PERSIST}, fetch = FetchType.EAGER)
     @JoinColumn(name = "course_cover_storage_id", referencedColumnName = "id")
     @Comment("课程封面文件")
     @Schema(description = "课程封面文件")
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java
index 736c99e..39effde 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/CourseColumn.java
@@ -62,13 +62,13 @@ public class CourseColumn extends BaseEntity {
     @Schema(description = "课程专栏价格")
     private BigDecimal price;
 
-    @ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
+    @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "course_column_description_storage_id", referencedColumnName = "id")
     @Comment("课程专栏简介文件")
     @Schema(description = "课程专栏简介文件")
     private Storage courseColumnDescriptionStorage;
 
-    @ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
+    @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "course_column_cover_storage_id", referencedColumnName = "id")
     @Comment("课程专栏封面文件")
     @Schema(description = "课程专栏封面文件")
diff --git a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Storage.java b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Storage.java
index 352eef0..fe23993 100644
--- a/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Storage.java
+++ b/common/domain/src/main/java/org/funcode/portal/server/common/domain/ielts/Storage.java
@@ -77,21 +77,21 @@ public class Storage extends BaseEntity {
     @ToString.Exclude
     private Set<Carousel> carousels;
 
-    @OneToMany(mappedBy = "courseDescriptionStorage", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "courseDescriptionStorage")
     @JsonIgnore
     @Comment("课程简介")
     @Schema(description = "课程简介")
     @ToString.Exclude
     private Set<Course> descriptionCourses;
 
-    @OneToMany(mappedBy = "courseMediaStorage", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "courseMediaStorage")
     @JsonIgnore
     @Comment("课程音视频")
     @Schema(description = "课程音视频")
     @ToString.Exclude
     private Set<Course> mediaCourses;
 
-    @OneToMany(mappedBy = "courseCoverStorage", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "courseCoverStorage")
     @JsonIgnore
     @Comment("课程封面")
     @Schema(description = "课程封面")
@@ -105,14 +105,14 @@ public class Storage extends BaseEntity {
     @ToString.Exclude
     private Set<Course> attachmentCourses;
 
-    @OneToMany(mappedBy = "courseColumnDescriptionStorage", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "courseColumnDescriptionStorage")
     @JsonIgnore
     @Comment("课程专栏简介")
     @Schema(description = "课程专栏简介")
     @ToString.Exclude
     private Set<CourseColumn> descriptionCourseColumns;
 
-    @OneToMany(mappedBy = "courseColumnCoverStorage", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "courseColumnCoverStorage")
     @JsonIgnore
     @Comment("课程专栏封面")
     @Schema(description = "课程专栏封面")