diff --git a/docker/.env.example b/docker/.env.example
index db85e5d5118faf..5ffab952c738f9 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -944,3 +944,6 @@ CSP_WHITELIST=
 
 # Enable or disable create tidb service job
 CREATE_TIDB_SERVICE_JOB_ENABLED=false
+
+# Maximum number of submitted thread count in a ThreadPool for parallel node execution
+MAX_SUBMIT_COUNT=100
diff --git a/docker/docker-compose.yaml b/docker/docker-compose.yaml
index 2860460d97a7c7..7e5f7ef11f723b 100644
--- a/docker/docker-compose.yaml
+++ b/docker/docker-compose.yaml
@@ -287,6 +287,7 @@ x-shared-env: &shared-api-worker-env
   OCEANBASE_CLUSTER_NAME: ${OCEANBASE_CLUSTER_NAME:-difyai}
   OCEANBASE_MEMORY_LIMIT: ${OCEANBASE_MEMORY_LIMIT:-6G}
   CREATE_TIDB_SERVICE_JOB_ENABLED: ${CREATE_TIDB_SERVICE_JOB_ENABLED:-false}
+  MAX_SUBMIT_COUNT: ${MAX_SUBMIT_COUNT:-100}
   RETRIEVAL_TOP_N: ${RETRIEVAL_TOP_N:-0}
   HTTP_PROXY: ${HTTP_PROXY:-}
   HTTPS_PROXY: ${HTTPS_PROXY:-}