Abstract:With the development of the meteorological cause and the requirement of fine weather forecast, the requirement and concept of time are been recognized more and more important for meteorological operational system. The unified time of meteorological operational system plays an important role in improving the quality of observation data. GPS NET time service system uses the GPS time source and system received software technology to make time service for computer. Standard time can be transmitted to certain users by net with Network time service publishing and Network user terminal received software. At the same time, the security of the GPS system and Network is considered fully. The results show that: GPS NET time service system can obtain GPS time source information accurately and release to user terminals through network technology to make meteorological oper〖HJ〗ational system obtain the standard time (error <1 s). The way of network publishing and meteorological internal network limitation can reduce the server and user terminal’s burden effectively and preventing external net virus’s invasion. The quick, exact and synchronization solution of time service is provided for meteorological equipment and meteorological operation by GPS Net time service system.