diff --git a/backend/src/main/java/com/innovation/platform/entity/CreditAppeal.java b/backend/src/main/java/com/innovation/platform/entity/CreditAppeal.java
deleted file mode 100644
index f52cb09..0000000
--- a/backend/src/main/java/com/innovation/platform/entity/CreditAppeal.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.innovation.platform.entity;
-
-import com.baomidou.mybatisplus.annotation.TableName;
-import lombok.Data;
-import lombok.EqualsAndHashCode;
-import java.math.BigDecimal;
-import java.time.LocalDateTime;
-
-/**
- * 学分申诉实体
- */
-@Data
-@EqualsAndHashCode(callSuper = true)
-@TableName("credit_appeal")
-public class CreditAppeal extends BaseEntity {
-    private Long creditDetailId;
-    private Long userId;
-    private String appealReason;
-    private String appealEvidence;
-    private Integer status;
-    private Long handlerId;
-    private LocalDateTime handleTime;
-    private String handleResult;
-    private BigDecimal adjustedCredit;
-}
diff --git a/backend/src/main/java/com/innovation/platform/entity/CreditDetail.java b/backend/src/main/java/com/innovation/platform/entity/CreditDetail.java
deleted file mode 100644
index 490e7eb..0000000
--- a/backend/src/main/java/com/innovation/platform/entity/CreditDetail.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.innovation.platform.entity;
-
-import com.baomidou.mybatisplus.annotation.TableName;
-import lombok.Data;
-import lombok.EqualsAndHashCode;
-import java.math.BigDecimal;
-
-/**
- * 学分明细实体
- */
-@Data
-@EqualsAndHashCode(callSuper = true)
-@TableName("credit_detail")
-public class CreditDetail extends BaseEntity {
-    private Long userId;
-    private Long projectId;
-    private Long achievementId;
-    private Integer creditSource;
-    private BigDecimal credit;
-    private BigDecimal coefficient;
-    private Long ruleId;
-    private String remark;
-    private Integer status;
-}
diff --git a/backend/src/main/java/com/innovation/platform/entity/CreditRule.java b/backend/src/main/java/com/innovation/platform/entity/CreditRule.java
deleted file mode 100644
index 520aa02..0000000
--- a/backend/src/main/java/com/innovation/platform/entity/CreditRule.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.innovation.platform.entity;
-
-import com.baomidou.mybatisplus.annotation.TableName;
-import lombok.Data;
-import lombok.EqualsAndHashCode;
-import java.math.BigDecimal;
-
-/**
- * 学分规则实体
- */
-@Data
-@EqualsAndHashCode(callSuper = true)
-@TableName("credit_rule")
-public class CreditRule extends BaseEntity {
-    private String ruleName;
-    private Integer ruleType;
-    private Integer targetType;
-    private Integer targetLevel;
-    private BigDecimal baseCredit;
-    private BigDecimal leaderCoefficient;
-    private BigDecimal memberCoefficient;
-    private String description;
-    private Integer status;
-}