diff --git a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java
index ab93927..745b1b2 100644
--- a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java
+++ b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java
@@ -59,6 +59,7 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
 
     @Override
     public PublicJobFairResponse getJobFairPage(PublicJobFairQuery query) {
+        query.setJobFairTitle(normalizeJobFairTitle(query.getJobFairTitle()));
         PageHelper.startPage(query.getPageNum(), query.getPageSize());
         List<PublicJobFair> list = publicJobFairMapper.selectPublicJobFairList(query);
         fillJobFairStatus(list);
@@ -180,12 +181,28 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
 
     @Override
     public List<PublicJobFair> selectList(PublicJobFairQuery query) {
+        query.setJobFairTitle(normalizeJobFairTitle(query.getJobFairTitle()));
         List<PublicJobFair> list = publicJobFairMapper.selectPublicJobFairList(query);
         fillJobFairStatus(list);
         fillCompanyApplyState(list);
         return list;
     }
 
+    /**
+     * 将标题查询条件转换为 LIKE 的字面量片段。
+     *
+     * <p>标题搜索是普通的包含匹配，用户输入的通配符不应改变 SQL 的匹配范围。</p>
+     */
+    static String normalizeJobFairTitle(String title) {
+        if (StringUtils.isBlank(title)) {
+            return null;
+        }
+        return title.trim()
+                .replace("\\", "\\\\")
+                .replace("%", "\\%")
+                .replace("_", "\\_");
+    }
+
     @Override
     public PublicJobFair selectById(String jobFairId) {
         PublicJobFair jobFair = publicJobFairMapper.selectPublicJobFairById(jobFairId);
diff --git a/ruoyi-bussiness/src/test/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImplTest.java b/ruoyi-bussiness/src/test/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImplTest.java
index 22de463..e3e5cac 100644
--- a/ruoyi-bussiness/src/test/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImplTest.java
+++ b/ruoyi-bussiness/src/test/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImplTest.java
@@ -39,6 +39,18 @@ class PublicJobFairServiceImplTest
         assertNull(PublicJobFairServiceImpl.resolveJobFairStatus(START_TIME, null, END_TIME));
     }
 
+    @Test
+    void titleSearchEscapesLikeWildcardsAndTrimsWhitespace()
+    {
+        assertEquals("100\\%\\_\\\\", PublicJobFairServiceImpl.normalizeJobFairTitle(" 100%_\\ "));
+    }
+
+    @Test
+    void blankTitleSearchIsIgnored()
+    {
+        assertNull(PublicJobFairServiceImpl.normalizeJobFairTitle("  \t"));
+    }
+
     private String resolveStatus(Date now)
     {
         return PublicJobFairServiceImpl.resolveJobFairStatus(START_TIME, END_TIME, now);