Wireless smart home environmental parameter monitoring network could real-time monitor the temperature/humidity, light intensity and air quality ( the concentration of CO2, CH2O, CH4, etc. ) in different areas of household, and it has very important significance for realizing the smart home. Proposes a wireless monitoring network based on LEACH protocol for smart home environmental parameter. Aiming at the characteristics of node distribution in intelligent home, the LEACH routing algorithm was modified about the selection for the cluster and the data-transmission method for the stable communication. And designs the hardware circuit of multiple environmental parameters acquisition, describes the wireless monitoring network based on CC2530, conducts the online debugging of modules and system, and finally the system is proved to meet the actual requirements through network test.