The invention discloses a robustness test system for joints of a humanoid robot. According to the robustness test system disclosed by the invention, a humanoid joint is loaded by using cylinders as power elements, and the robustness test system has the function of completely testing the robustness of the joints of the humanoid robot. The robustness test system for the joints of the humanoid robotmainly consists of cylinders, a bracket, a humanoid joint, pressure sensors, tension sensors, displacement sensors and connecting pieces, wherein through the movement displacement or the magnitude ofoutput force of the cylinders which are arranged up and down are independently or simultaneously controlled, so that loading of various complex shapes can be realized. The robustness test system disclosed by the invention is driven by the cylinder, has the characteristics of being simple and compact in structure, capable of performing multi-direction loading, and convenient to perform quantitativeanalysis, and can be used for performing robustness test on mechanisms which need to perform multi-direction quantitative analysis, including humanoid joints, robots and others.