Abstract: With rapid development of modern computer information technology and automatic control technology in field of agriculture，gradually increasing of greenhouse structure grade，and strong dependence of crops on external environment，setting up an greenhouse environment control system suitable for crop growth has become urgent demand of agricultural growers.Aiming at intelligent management requirement of greenhouse environment information，an environment suitable for growing crops was created through regulation of crop environmental factors，so as to achieve purpose of crop off-season production and increase production.In order to further improve precision of greenhouse intelligent control，and improve efficiency of crop production，a set of greenhouse environment control system has been designed based on the PID control algorithm.The system would play an important role in regulating greenhouse environmental parameters and improving crop growth environment.