Abstract: To solve the problems emerged in the traditional computer control system in greenhouse, the present situation of the greenhouse environment control is analyzed and a new scheme of it is presented. By using distributed network control technology, the advanced single chip microcomputer(SCM) technology and humidity sensitive and temperature sensitive device which possess the ability of high precision and high reliability, an all digitalized “intelligent humidity temperature sensor” and “double direction intelligent controller” was developed. The new developed greenhouse environment control was successfully used in several greenhouses in China. The future development of this system which can be used in livestock houses or other agricultural structures is also discussed.