diff --git a/docs/zh/core/logic-delete.md b/docs/zh/core/logic-delete.md
index a2793b9e..6994d313 100644
--- a/docs/zh/core/logic-delete.md
+++ b/docs/zh/core/logic-delete.md
@@ -139,12 +139,13 @@ LogicDeleteManager.execWithoutLogicDelete(()->
 
 MyBatis-Flex 提供了三种字段类型对应的逻辑删除处理器，用户可以根据逻辑删除字段的类型进行设置，它们分别是：
 
-| 处理器名称                        | 对应字段类型   | 数据正常时的值 | 数据被删除时的值 |
-|------------------------------|----------|---------|----------|
-| IntegerLogicDeleteProcessor  | integer  | 0       | 1        |
-| BooleanLogicDeleteProcessor  | tinyint  | false   | true     |
-| DateTimeLogicDeleteProcessor | datetime | null    | 被删除时间    |
-| TimeStampLogicDeleteProcessor     | bigint   | 0       | 被删除时的时间戳 |
+| 处理器名称                          | 对应字段类型    | 数据正常时的值 | 数据被删除时的值 |
+|--------------------------------|-----------|---------|----------|
+| IntegerLogicDeleteProcessor    | integer   | 0       | 1        |
+| BooleanLogicDeleteProcessor    | tinyint   | false   | true     |
+| DateTimeLogicDeleteProcessor   | datetime  | null    | 被删除时间    |
+| TimeStampLogicDeleteProcessor  | bigint    | 0       | 被删除时的时间戳 |
+| PrimaryKeyLogicDeleteProcessor | 该条数据的主键类型 | null    | 该条数据的主键值 |
 
 使用时，只需通过 `LogicDeleteManager` 来设置逻辑删除处理器即可，例如：
 
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/logicdelete/impl/PrimaryKeyLogicDeleteProcessor.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/logicdelete/impl/PrimaryKeyLogicDeleteProcessor.java
index 40f041fa..df8012a4 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/logicdelete/impl/PrimaryKeyLogicDeleteProcessor.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/logicdelete/impl/PrimaryKeyLogicDeleteProcessor.java
@@ -16,7 +16,6 @@
 
 package com.mybatisflex.core.logicdelete.impl;
 
-import com.mybatisflex.core.FlexGlobalConfig;
 import com.mybatisflex.core.dialect.IDialect;
 import com.mybatisflex.core.exception.FlexAssert;
 import com.mybatisflex.core.logicdelete.AbstractLogicDeleteProcessor;
@@ -36,24 +35,25 @@ import static com.mybatisflex.core.constant.SqlConsts.EQUALS;
  */
 public class PrimaryKeyLogicDeleteProcessor extends AbstractLogicDeleteProcessor {
 
+    @Override
+    public String buildLogicNormalCondition(String logicColumn, TableInfo tableInfo, IDialect dialect) {
+        return dialect.wrap(logicColumn) + " IS NULL";
+    }
+
     @Override
     public String buildLogicDeletedSet(String logicColumn, TableInfo tableInfo, IDialect dialect) {
         List<IdInfo> primaryKeyList = tableInfo.getPrimaryKeyList();
-        FlexAssert.notEmpty(primaryKeyList, "Must have one primary key.");
+        FlexAssert.notEmpty(primaryKeyList, "Entity must have one primary key.");
         String column = primaryKeyList.get(0).getColumn();
         return dialect.wrap(logicColumn) + EQUALS + dialect.wrap(column);
     }
 
     /**
-     * 正常未删除的值为 0 （或者可配置为其他值）。
+     * 正常未删除的值为 {@code null}，兼容不同的主键类型。
      */
     @Override
     public Object getLogicNormalValue() {
-        Object normalValueOfLogicDelete = FlexGlobalConfig.getDefaultConfig().getNormalValueOfLogicDelete();
-        if (normalValueOfLogicDelete instanceof Number) {
-            return normalValueOfLogicDelete;
-        }
-        return 0;
+        return null;
     }
 
     /**