diff --git a/src/iflytop/components/zcanreceiver/zcanhost.hpp b/src/iflytop/components/zcanreceiver/zcanhost.hpp
index 2ec7e70..ab855a4 100644
--- a/src/iflytop/components/zcanreceiver/zcanhost.hpp
+++ b/src/iflytop/components/zcanreceiver/zcanhost.hpp
@@ -96,13 +96,13 @@ class ZCanHost {
   } huacheng_pressure_sensor_read_c1005_t;
   int32_t huacheng_pressure_sensor_get_pa(huacheng_pressure_sensor_read_c1005_t* rawdata) {
     if (rawdata->unit == 0) {
-      int32_t pa = (int32_t)rawdata->value / (10.0 * rawdata->precision) * 1000000;
+      int32_t pa = (int32_t)rawdata->value / (pow(10.0,rawdata->precision) ) * 1000000;
       return pa;
     } else if (rawdata->unit == 1) {
-      int32_t pa = (int32_t)rawdata->value / (10.0 * rawdata->precision) * 1000;
+      int32_t pa = (int32_t)rawdata->value / (pow(10.0,rawdata->precision) ) * 1000;
       return pa;
     } else if (rawdata->unit == 2) {
-      int32_t pa = (int32_t)rawdata->value / (10.0 * rawdata->precision);
+      int32_t pa = (int32_t)rawdata->value / (pow(10.0,rawdata->precision) );
       return pa;
     }
     return -1;