diff --git a/infrastructure/src/official_download.rs b/infrastructure/src/official_download.rs
index d19d1da..dce51bf 100644
--- a/infrastructure/src/official_download.rs
+++ b/infrastructure/src/official_download.rs
@@ -1320,9 +1320,11 @@ impl OfficialResourcePullService {
                 return Err(format!("官方 URL 包含不安全路径片段：{url}"));
             }
 
-            let segment = segment.split(['?', '#']).next().unwrap_or(segment);
-            if segment.is_empty() {
-                continue;
+            // 官方资源 URL 不携带 query/fragment。若出现则直接拒绝，而非静默剥除——
+            // 否则仅 query 不同的两个 URL 会映射到同一目标文件而相互覆盖，
+            // 并导致每轮 hash 复用校验失配、反复重下。
+            if segment.contains('?') || segment.contains('#') {
+                return Err(format!("官方资源 URL 不允许包含 query 或 fragment：{url}"));
             }
             relative_destination.push(sanitize_segment(segment));
         }
@@ -2193,6 +2195,30 @@ exit 22
         assert!(error.contains("危险路径"));
     }
 
+    #[test]
+    fn rejects_resource_url_with_query_or_fragment() {
+        let temp = TempDir::new().unwrap();
+        let service = OfficialResourcePullService::new(temp.path().join("out"));
+
+        for url in [
+            "https://prod-clientpatch.bluearchiveyostar.com/r93_token/TableBundles/TableCatalog.bytes?v=1",
+            "https://prod-clientpatch.bluearchiveyostar.com/r93_token/TableBundles/TableCatalog.bytes#frag",
+        ] {
+            let error = service.destination_for_url(url).unwrap_err();
+            assert!(
+                error.contains("query 或 fragment"),
+                "unexpected error for {url}: {error}"
+            );
+        }
+
+        // 无 query 的正常资源 URL 仍可映射。
+        assert!(service
+            .destination_for_url(
+                "https://prod-clientpatch.bluearchiveyostar.com/r93_token/TableBundles/TableCatalog.bytes",
+            )
+            .is_ok());
+    }
+
     #[cfg(unix)]
     #[test]
     fn pull_rejects_symlink_parent_escape() {