Multi-greenhouse automatic control and information release system based on network adopt the hierarchical design model，and used PLC as the control core.It could collect the environment parameters of intelligent greenhouse such as temperature，humidity and light atc，and used the separated data processing technology and the fuzzy control strategy for automatic control of the actuator.It also used configuration software for remote control and monitoring，practical web technology as a greenhouse information publishing platform，practical way of compound of RS485 bus and the computer network data transmission system.The results proved that the system had characteristics of friendly interface，simple operation，high efficiency and the information release in a timely manner.So this system had well popularization value.