The environmental temperature plays an important role in the growing crops. How to make use of computer technology to realize automatic control ambient temperature of greenhouse is a hot issue in the intelligent agriculture. The control of environmental temperature in modern greenhouses is collected and analyzed by monitoring system of greenhouse environment based on Labview software and wireless communications technology. NRF24L01 wireless receive-send model makes temperature collection come true. Moreover, managing computer makes data wireless communications become possible. Over- temperature alarm information is transmissioned to user timely. Finally system interface is designed on the Labview software platform.