The invention discloses a ground ramming device. The ground ramming device comprises a machine box, a tank body is fixedly connected to one end of the machine box, a cover plate is fixedly connected to the upper ends of the machine box and the tank body, and a supporting frame is welded inside the machine box; a tripod is welded to the inner side wall, close to the tank body, of the machine box, and the tripod and the supporting frame are fixedly connected; and a motor is fixedly connected to the end, close to the supporting frame, of the machine box, a swing rod is rotationally connected to one end of the supporting frame and is fixedly connected with an output shaft of the motor, a flywheel is rotationally connected to the connecting position between the supporting frame and the tripod,a first limiting wheel is rotationally connected to the flywheel, and a first hollow groove and a second hollow groove are formed in the swing rod. According to the device, the structure is novel, theoperation is stable, a hammer body can move up and down in a reciprocating mode to ram the ground through the transmission of the flywheel and the swing rod, the ground ramming device is higher in efficiency, the use of hydraulic transmission is avoided, so that the maintenance cost is reduced, the practicability is high, and the popularization is facilitated.