diff --git a/server-rs/crates/platform-tripo/src/common/error.rs b/server-rs/crates/platform-tripo/src/common/error.rs
index 74d967152..95cc5f91b 100644
--- a/server-rs/crates/platform-tripo/src/common/error.rs
+++ b/server-rs/crates/platform-tripo/src/common/error.rs
@@ -332,7 +332,10 @@ fn request_failure_message(
 /// 去掉首尾空白、截断，并挡掉疑似带地址的响应体。
 fn body_snippet(body: &str) -> Option<String> {
     let body = body.trim();
-    if body.is_empty() || body.contains("http://") || body.contains("https://") {
+    // 大小写不敏感：`HTTPS://…` 这类写法同样是带地址的响应体，放过去就把签名 URL
+    // 带进了任务错误信息。这条路径不在热点上，整串转小写即可。
+    let lowered = body.to_ascii_lowercase();
+    if body.is_empty() || lowered.contains("http://") || lowered.contains("https://") {
         return None;
     }
     let mut chars = body.chars();