Through the combination of advanced radio frequency identification technology, GPS technology, wireless communication technology and temperature and humidity sensing technology, Yanyi cold chain monitoring solution collects the temperature, humidity, motion state and other information of drug store, medical refrigerator, cold store and refrigerator car, then transmits the collected data to the gateway of LTE Internet of things and uploads the management platform through 4G network channel in real time. It is an ideal solution for temperature and humidity monitoring in the field of cold chain monitoring to realize temperature and humidity monitoring, display, record and over limit alarm in the whole process of cold chain link, and query historical data.