Temperature and humidity monitoring of refrigerated trucks, users can use computers and mobile phones to monitor the location, speed, mileage, cabin temperature of the refrigerated trucks, and information about the driving status of the vehicle. It can record the transportation temperature in real time (real-time temperature, exceeding the set temperature), and strictly control the transportation quality. Many aspects such as improving the level of operation management play an important role. For example, if there is a problem with the quality of the transported product, the original data is provided through the temperature report.