The invention is mainly applied to science and engineering type mechanical principle teaching of colleges and universities, and belongs to the field in the technical fields of transmission element application and teaching instruments. By combining the characteristics of different transmission elements for serial combination and innovation, the invention designs a multi-transmission-element transmission form and transmission feature comparison platform, which comprises belt transmission, chain transmission, friction wheel transmission, gear transmission, worm rod transmission, spiral transmission, groove wheel transmission and the like. The problems of simple structure, few knowledge point design sides, huge size, heavy weight and ponderous structure the like of the existing teaching aid are solved, the analysis, the display and the explanation are carried out by aiming at main mechanical transmission elements, and the work features of various transmission elements are highlighted through comparison. The comparison platform has the advantages that students can master basic theories, basic knowledge and basic skills of the mechanical principle, and in addition, the students can primarily have the ability of determining the mechanical movement scheme and analyzing and designing the mechanism.