diff --git a/.github/workflows/pr-review.yml b/.github/workflows/pr-review.yml
index 06586855..2b42ab27 100644
--- a/.github/workflows/pr-review.yml
+++ b/.github/workflows/pr-review.yml
@@ -25,3 +25,17 @@ jobs:
           github_action_config.auto_review: "true"
           github_action_config.auto_describe: "false"
           github_action_config.auto_improve: "true"
+          pr_reviewer.extra_instructions: >
+            Classify each finding with a severity tag:
+            [Bug] = Must fix: behavioral regression, logic error, security vulnerability, data loss/corruption, resource leak, API contract violation.
+            [Suggestion] = Recommended: missing tests, dead code, inconsistency, poor observability, unclear intent, unrelated changes, performance issues (N+1 queries, redundant computation in loops, unnecessary large object copies, unbounded collection growth).
+
+            Review focus areas:
+            1. Control Flow - are all branches reachable? errors propagated correctly? unintended fall-through?
+            2. Data Flow - input validated at boundaries? implicit type coercion? null/empty handled?
+            3. Integration Points - API changes backward compatible? config defaults sensible? dependencies pinned?
+            4. Concurrency - shared state synchronized? execution order assumptions valid? cleanup in all paths?
+
+            Be specific: reference exact variable names, function calls, conditions.
+            When suggesting a fix, include a code block with the recommended change.
+            Match the language of the PR (Chinese PR = Chinese comments, English PR = English comments).