The distribution pattern of a single source to multi destination nodes is widely used in meteorological data sharing service. According to the operational characteristics of meteorological data sharing service, a meteorological data sharing application based on peer to peer network technology is designed and implemented, which can provide such functionalities as the production and distribution of data seeds and sharing between nodes. By establishing a simulation platform, the application of peer to peer network technology in the national meteorological broadband network (CMANet) is theoretically verified. By small scale experiments, it is proved that the peer to peer application is suitable for dealing with the scene of a single source to multi destination node transmission. It can improve the transmission efficiency of data sharing without increasing the central node resource consumption.