With the development of CINRAD and the sharing of radar data, the amount and types of transmitted radar data increase greatly. In order to improve the transmission quality, the types and the sharing way of the CINRAD data in Hebei Province are introduced. In combination with the practical transmission status of radar data in Hebei, the factors affecting radar transmission are analyzed. The results show that the influencing factors come from the network, communication circuitry， transmission software, radar device, and manmade mistake. The corresponding countermeasures are given also. These provided useful references for the monitoring and sharing of radar data, and improved the transmission quality of radar data.