The invention relates to a land experiment system applied in a two-degree-of-freedom mobile robot module. The system comprises a rack, two magnetic suspension guide rails, two vertical guide rails, two magnetic suspension sliding blocks, a servo motor, a motor installing plate, screws, nuts, a seven-line resistive touch screen, and a robot module. The two magnetic suspension guide rails are fixed on the top of the rack in parallel. The two magnetic suspension sliding blocks are respectively suspended on the two magnetic suspension guide rails. The middle parts of the two magnetic suspension sliding blocks are fixed through a cross rod. The two vertical guide rails are fixed on the cross rod and pass through the robot module. The servo motor is installed on the middle part of the cross rod through the motor installing plate. The output shaft of the servo motor is connected with the screws. The screws and the nuts form a ball screw mechanism. The nuts are fixed on the robot module. The tail end of the robot module makes contact with the seven-line resistive touch screen. The system breaks bulk movement of the robot module to movements in a horizontal direction and a vertical direction in an equivalent and isochronal manner, and on the horizontal direction, no force does negative work, providing convenience for calculating efficiency.