The application of IP multicast in the target and echo data acquisition and transmission system of shore-basedsurveillance radar is introduced.The target information detected by radar is collected by remote control.The data containing radartarget information and echo are compressed and uploaded through IP network.The border and coastal defense monitoring centerreceives and displays the detection echo screen of each radar station, grasps the current operation of all radars at any time byswitching the IP of different stations, and plays a control role in the erection of landmines.