Crop production in domestic and overseas greenhouses shows that advanced automation and management system for greenhouse will improve the efficiency of agriculture production. Based on group control idea for greenhouses in the same zone, greenhouse computer distributed auto-control system, which is a kind of principal and subordinate structure made up of one PC and several microcontrollers, principal RS-485 bus communication network and step by step validated algorithms to ensure data transmitted correctly. The local operation in greenhouse can be obtained by monitoring environment parameters and warning information can be read into PC. In addition, the dynamic heating management method discussed will implement accurate control on temperature according to expert experience. The system has been put into use and proved reliable in automatic data acquisition, and at last the paper puts forward a further development trend on this system.