The utility model relates to a gear transmission accuracy testing experiment table and belongs to the gear transmission accuracy detection experiment technical filed. According to the gear transmission accuracy testing experiment table of the utility model, the height position of a standard gear can be adjusted through a vertical ball screw, and the horizontal position of a measured gear can be adjusted through a horizontal ball screw, and therefore, accurate engagement of the standard gear and the measured gear can be ensured; 90-degree turnover of the standard gear can be realized easily through a turnover mechanism, and transmission accuracy testing of a cylindrical gear or a bevel gear can be satisfied; signals generated in the engagement rotation process of the standard gear and the measured gear can be collected through a hollow encoder, and therefore, testing of transmission error values between the gears can be realized; testing of static errors and dynamic errors of the gears can be performed through adjusting the braking torque output of a magnetic remanence brake, and therefore, simulation of no-load and load conditions can be realized, and the authenticity of gear transmission accuracy testing can be improved.