The wireless temperature and humidity system uses wireless technology to monitor and record the temperature and humidity of blood carts, plasma storage, fresh storage, storage cabinets, refrigerators, freezers, hospitals, machine rooms, drying ovens, etc. through a dedicated frequency band. The collector converts the temperature and humidity information into a wireless signal and transmits it to the relay module. The data is directly transmitted to the control center computer via the TCP/IP protocol. The computer processes the signal and displays it in the form of reports and curves. The system has Automatic record storage, printing curves and reports, historical data query, automatic alarm and other functions.