diff --git a/apps/api/src/services/service_registry.py b/apps/api/src/services/service_registry.py
index 2c38010c..8cb27626 100644
--- a/apps/api/src/services/service_registry.py
+++ b/apps/api/src/services/service_registry.py
@@ -15,8 +15,24 @@ import yaml
 
 logger = structlog.get_logger(__name__)
 
-# YAML 路徑（相對於 repo root）
-_DEFAULT_REGISTRY_PATH = Path(__file__).parents[5] / "ops" / "config" / "service-registry.yaml"
+# YAML 路徑 — 安全搜尋，相容本地開發 + Docker 容器
+# 本地: apps/api/src/services/ → parents[4] = repo root
+# Docker: /app/src/services/ → parents[3] = /app → 需要往上找 ops/config
+def _find_registry_path() -> Path:
+    """安全搜尋 service-registry.yaml，相容不同部署環境"""
+    candidates = [
+        Path(__file__).resolve().parents[4] / "ops" / "config" / "service-registry.yaml",  # 本地開發
+        Path(__file__).resolve().parents[3] / "ops" / "config" / "service-registry.yaml",  # Docker
+        Path("/app/ops/config/service-registry.yaml"),                                       # Docker 絕對路徑
+        Path(__file__).resolve().parents[2] / "ops" / "config" / "service-registry.yaml",
+    ]
+    for p in candidates:
+        if p.exists():
+            return p
+    # fallback: 回傳第一個候選（會在載入時報錯，但不會 crash import）
+    return candidates[0]
+
+_DEFAULT_REGISTRY_PATH = _find_registry_path()
 
 
 class StatefulLevel(str, Enum):