diff --git a/npu_status.sh b/npu_status.sh
index a79339f0..e164ab77 100644
--- a/npu_status.sh
+++ b/npu_status.sh
@@ -14,7 +14,6 @@ npu_id_arr=(2 3 5 6)
 
 get_power_dissipation() {
     local npu_id="$1"
-    # need to varify
     power_dissipation=$(npu-smi info -t power -i ${npu_id} | grep 'Power Dissipation(W)' | awk '{print $4}')
     echo "${power_dissipation}"
 }
@@ -22,7 +21,7 @@ get_power_dissipation() {
 get_mem_usage() {
     local chip="$1"
     local device="$2"
-    mem_usage=$(npu-smi info | grep '${chip}       ${device}' | awk '{print $8}')
+    mem_usage=$(npu-smi info | grep "${chip}       ${device}" | awk '{print $8}')
     echo "${mem_usage}"
 }
 
@@ -32,7 +31,6 @@ loop_cnt=0
 while true; do
     device_mem_usage=""
     for ((i=0; i<device_cnt; i++)); do
-        echo "get_mem_usage ${chip_id_arr_from_info[i]} ${i}"
         mem_usage=$(get_mem_usage ${chip_id_arr_from_info[i]} ${i})
         device_mem_usage="${device_mem_usage}{"npu_id": ${npu_id_arr_from_info[i]}, "chip_id": ${chip_id_arr_from_info[i]}, "device_id": ${i}, "mem_usage": ${mem_usage}}, "
     done