diff --git a/docker/launch_backend_service.sh b/docker/launch_backend_service.sh
index 10f7811349..8bd643155c 100755
--- a/docker/launch_backend_service.sh
+++ b/docker/launch_backend_service.sh
@@ -5,9 +5,12 @@ set -e
 
 usage() {
     local exit_code=${1:-1}
-    echo "Usage: $0 [ragflow|task_executor|admin|data_sync]..."
+    echo "Usage: $0 [OPTIONS] [ragflow|task_executor|admin|data_sync]..."
     echo
     echo "Without arguments, starts ragflow and task_executor."
+    echo "Options:"
+    echo "  --debug         Enable debug mode and debug-level logging"
+    echo
     echo "Available service types:"
     echo "  ragflow         Start RAGFlow server based on API_PROXY_SCHEME"
     echo "  task_executor   Start task workers based on API_PROXY_SCHEME"
@@ -16,6 +19,7 @@ usage() {
     echo
     echo "Examples:"
     echo "  $0"
+    echo "  $0 --debug"
     echo "  $0 ragflow"
     echo "  $0 task_executor"
     echo "  $0 admin"
@@ -99,10 +103,13 @@ task_exe(){
         prepare_for_go
         task_name="ragflow_server --ingestor"
         task_cmd=("bin/ragflow_server" "--ingestor")
+        if [[ "$DEBUG_MODE" -eq 1 ]]; then
+            task_cmd+=("--debug")
+        fi
     fi
     local retry_count=0
     while ! $STOP && [ $retry_count -lt $MAX_RETRIES ]; do
-        echo "Starting $task_name (Attempt $((retry_count+1)))"
+        echo "Starting ${task_cmd[*]} (Attempt $((retry_count+1)))"
         EXIT_CODE=0
         if [[ "${API_PROXY_SCHEME}" == "go" ]]; then
             "${task_cmd[@]}" || EXIT_CODE=$?
@@ -134,9 +141,12 @@ run_server(){
         server_name="ragflow_server"
         server_cmd=("bin/ragflow_server" "--api")
     fi
+    if [[ "$DEBUG_MODE" -eq 1 ]]; then
+        server_cmd+=("--debug")
+    fi
     local retry_count=0
     while ! $STOP && [ $retry_count -lt $MAX_RETRIES ]; do
-        echo "Starting $server_name (Attempt $((retry_count+1)))"
+        echo "Starting ${server_cmd[*]} (Attempt $((retry_count+1)))"
         EXIT_CODE=0
         "${server_cmd[@]}" || EXIT_CODE=$?
         if [ $EXIT_CODE -eq 0 ]; then
@@ -163,10 +173,13 @@ run_admin_server(){
         prepare_for_go
         server_name="admin_server"
         server_cmd=("bin/ragflow_server" "--admin")
+        if [[ "$DEBUG_MODE" -eq 1 ]]; then
+            server_cmd+=("--debug")
+        fi
     fi
     local retry_count=0
     while ! $STOP && [ $retry_count -lt $MAX_RETRIES ]; do
-        echo "Starting $server_name (Attempt $((retry_count+1)))"
+        echo "Starting ${server_cmd[*]} (Attempt $((retry_count+1)))"
         EXIT_CODE=0
         "${server_cmd[@]}" || EXIT_CODE=$?
         if [ $EXIT_CODE -eq 0 ]; then
@@ -245,31 +258,36 @@ START_RAGFLOW=0
 START_TASK_EXECUTOR=0
 START_ADMIN=0
 START_DATA_SYNC=0
-
-if [ $# -eq 0 ]; then
-  START_RAGFLOW=1
-  START_TASK_EXECUTOR=1
-fi
+DEBUG_MODE=0
+SERVICE_SELECTED=0
 
 for arg in "$@"; do
   case $arg in
     ragflow|server|webserver)
       START_RAGFLOW=1
+      SERVICE_SELECTED=1
       ;;
     task_executor|task-executor|taskexecutor|ingestor)
       START_TASK_EXECUTOR=1
+      SERVICE_SELECTED=1
       ;;
     admin|admin_server|admin-server)
       START_ADMIN=1
+      SERVICE_SELECTED=1
       ;;
     data_sync|data-sync|datasync)
       START_DATA_SYNC=1
+      SERVICE_SELECTED=1
       ;;
     all)
       START_RAGFLOW=1
       START_TASK_EXECUTOR=1
       START_ADMIN=1
       START_DATA_SYNC=1
+      SERVICE_SELECTED=1
+      ;;
+    --debug)
+      DEBUG_MODE=1
       ;;
     -h|--help)
       usage 0
@@ -281,6 +299,15 @@ for arg in "$@"; do
   esac
 done
 
+if [[ "$DEBUG_MODE" -eq 1 && "${API_PROXY_SCHEME}" != "go" ]]; then
+  export LOG_LEVELS="root=DEBUG"
+fi
+
+if [[ "$SERVICE_SELECTED" -eq 0 ]]; then
+  START_RAGFLOW=1
+  START_TASK_EXECUTOR=1
+fi
+
 if [[ "$START_RAGFLOW" -eq 1 ]]; then
   ensure_db_init
   run_mysql_migrations