diff --git a/tests/scripts/run-unit-node.sh b/tests/scripts/run-unit-node.sh
index 515a961..69ddf4e 100755
--- a/tests/scripts/run-unit-node.sh
+++ b/tests/scripts/run-unit-node.sh
@@ -5,4 +5,18 @@ ROOT_DIR="$(cd "$(dirname "$0")/../.." && pwd)"
 cd "$ROOT_DIR"
 
 ./tests/scripts/check-node-split-syntax.sh
-node --test tests/node/stream-tool-sieve.test.js tests/node/chat-stream.test.js tests/node/js_compat_test.js "$@"
+
+# Keep Node's file-level test scheduling serial to avoid intermittent cross-file
+# interference when multiple suites import mutable module singletons.
+NODE_TEST_LOG="$(mktemp)"
+cleanup() {
+  rm -f "$NODE_TEST_LOG"
+}
+trap cleanup EXIT
+
+if ! node --test --test-concurrency=1 tests/node/stream-tool-sieve.test.js tests/node/chat-stream.test.js tests/node/js_compat_test.js "$@" 2>&1 | tee "$NODE_TEST_LOG"; then
+  echo
+  echo "[run-unit-node] Node tests failed. 失败摘要如下："
+  rg -n "^(not ok|# fail)|ERR_TEST_FAILURE" "$NODE_TEST_LOG" || true
+  exit 1
+fi