The utility model provides a device for connecting radar antenna, includes the body of rod, and the circular slot seat is connected to body of rod upper end, is equipped with the ball connecting portion in the circular slot seat, and ball connecting portion upper end is connected the antenna and is installed the board, and the antenna is equipped with clamping device on installing the board, and clamping device includes the L shaped plate, and the left end of L shaped plate is equipped with spring follow block, and spring follow block passes through the spring coupling fly leaf, and the bottomof the diaphragm of L shaped plate is the rail groove, and the fly leaf end is equipped with the gyro wheel with the rail slot combination. The utility model discloses having replaced utilizing on current phase the iron wire to twine the mode of perhaps using screwed connection at the stick with the radar antenna, through spring and fly leaf and other proportioning plants, can having installed the radar antenna on this clamping device fast, it is convenient to dismantle, utilizes the cooperation of rail groove and gyro wheel, and whole process fortune is moved stably, and it is convenient touse, and through the adapter coupling of circular slot and ball, can realize the rotation of radar antenna all directions to the needs of adaptation real -time monitoring in -process.