diff --git a/zt-framework/zt-spring-boot-starter-biz-tenant/src/main/java/com/zt/plat/framework/tenant/core/db/TenantDatabaseInterceptor.java b/zt-framework/zt-spring-boot-starter-biz-tenant/src/main/java/com/zt/plat/framework/tenant/core/db/TenantDatabaseInterceptor.java
index ac2760fa..81626a6e 100644
--- a/zt-framework/zt-spring-boot-starter-biz-tenant/src/main/java/com/zt/plat/framework/tenant/core/db/TenantDatabaseInterceptor.java
+++ b/zt-framework/zt-spring-boot-starter-biz-tenant/src/main/java/com/zt/plat/framework/tenant/core/db/TenantDatabaseInterceptor.java
@@ -73,9 +73,12 @@ public class TenantDatabaseInterceptor implements TenantLineHandler {
             tableInfo = TableInfoHelper.getTableInfo(tableName);
         }
         if (tableInfo == null) {
-            tableName = tableName.toLowerCase();
+            tableName = tableName.toUpperCase();
             tableInfo = TableInfoHelper.getTableInfo(tableName);
         }
+        if (tableInfo == null) {
+            return true;
+        }
         // 如果继承了 TenantBaseDO 基类，显然不忽略租户
         if (TenantBaseDO.class.isAssignableFrom(tableInfo.getEntityType())) {
             return false;