Abstract: To investigate the signal transmission characteristics of high\|speed maglev MMW communication system, full\|aspect on\|site testing of the intensity coverage of base stations is carried out on the 1.5 km high\|speed Maglev test line in Jiading campus of Tongji University, and path losses of each base station are calculated. By analyzing testing results, the typical millimeter wave channel characteristics in maglev scenarios are obtained, and signal coverages of different base stations, different power or at different distances are predicted.