Abstract: The system of Yuxi weather modification achieve the artificial weather airspace application and approval automatically and systematically in the Yunnan province meteorological departments firstly.Based on Yuxi weather modification operation needs,the system was developed independently relying on the meterological operational communication network.The system uses the C/S structure,modular programming and VB as the programming language under the Windows platform.The system can not only complete modification airspace application and approval real-time,but also monitoring,transmission job information,issued the warning information and operating records management functionality integrated modification airspace systems.Operational data takes databases dual backup,operating process instructions shows by two ways of voice reminder and list,even achieves updates of the operating data timely and storage management,to ensure the safety of the modification jobs.