Designing a kind of system that making use of new generation of monolithic and whole calibration,high integration,small volume digital temperature and humidity sensors SHT71 by the MCU control to achieve the collected data of temperature and humidity and display it,then through the wireless sending and receiving to transmit the collected data and remote control the temperature and humidity-conditioning equipment,and coupled with portable and PC operation.This system have the features of small in size,the widespread applicability and user-friendly.