diff --git a/infra/docker/worker.Dockerfile b/infra/docker/worker.Dockerfile
index 7805b9d79..07e701eac 100755
--- a/infra/docker/worker.Dockerfile
+++ b/infra/docker/worker.Dockerfile
@@ -67,6 +67,9 @@ RUN chmod +x /usr/local/bin/entrypoint-worker.sh
 # 业务代码（变化最频繁，放最后）
 COPY apps/worker/ /app/apps/worker/
 
+
+# ---- Install CJK fonts for ASS subtitle rendering ----
+RUN apt-get update && apt-get install -y --no-install-recommends fonts-noto-cjk && fc-cache -fv && rm -rf /var/lib/apt/lists/*
 USER celery
 
 # Worker 入口点