diff --git a/src/service/disfection_ctl/disinfection_service.cpp b/src/service/disfection_ctl/disinfection_service.cpp
index 1046351..e85d854 100644
--- a/src/service/disfection_ctl/disinfection_service.cpp
+++ b/src/service/disfection_ctl/disinfection_service.cpp
@@ -15,7 +15,6 @@ using namespace std;
 #define DUMP_LOG_PERIOD             (5 * 60.0)
 // #define DUMP_LOG_PERIOD          (10.0)
 
-
 namespace iflytop {
 extern bool g_in_test;
 
@@ -468,6 +467,10 @@ void DisinfectionService::updateH2O2SensorData() {
   cx.max_saturation = cx.saturation[0];
 
   for (size_t i = 0; i < MAX_H2O2_SENSOR_NUM; i++) {
+    if (!m_deviceIoControlService->H2O2Sensor_readSensorState(i)) {
+      continue;
+    }
+
     if (cx.h2o2[i] < cx.min_h2o2) {
       cx.min_h2o2 = cx.h2o2[i];
     }