diff --git a/ylong_http_client/src/async_impl/dns/default.rs b/ylong_http_client/src/async_impl/dns/default.rs
index 864bf96237c6cf373435538f78d1f93ee2d9860f..ab4997cb74c46409500c35a7efdea2dc292372c3 100644
--- a/ylong_http_client/src/async_impl/dns/default.rs
+++ b/ylong_http_client/src/async_impl/dns/default.rs
@@ -220,35 +220,4 @@ mod ut_dns_test {
             assert_eq!(vec1, vec2);
         }
     }
-
-    /// UT test case for `DefaultDnsResolver::resolve`
-    ///
-    /// # Brief
-    /// 1. Creates a default dns resolver with 50ms ttl.
-    /// 2. Calls resolve to get socket address twice.
-    /// 3. Verifies the second resolver is faster than the first one.
-    /// 4. Verifies the second resolver result as same as the first one.
-    #[test]
-    #[cfg(feature = "ylong_base")]
-    fn ut_dns_resolver_resolve() {
-        ylong_runtime::block_on(async {
-            let authority = "example.com:0";
-            let resolver = DefaultDnsResolver::new().set_ttl(Duration::from_secs(50));
-            let start1 = Instant::now();
-            let addrs1 = resolver.resolve(authority).await;
-            let duration1 = start1.elapsed();
-            assert!(addrs1.is_ok());
-            ylong_runtime::time::sleep(Duration::from_millis(10)).await;
-            let start2 = Instant::now();
-            let addrs2 = resolver.resolve(authority).await;
-            let duration2 = start2.elapsed();
-            assert!(duration1 > duration2);
-            assert!(addrs2.is_ok());
-            if let (Ok(addr1), Ok(addr2)) = (addrs1, addrs2) {
-                let vec1: Vec<SocketAddr> = addr1.collect();
-                let vec2: Vec<SocketAddr> = addr2.collect();
-                assert_eq!(vec1, vec2);
-            }
-        });
-    }
 }