The invention provides a mechanism motion demonstrating platform. The mechanism motion demonstrating platform comprises a box body, a planetary gear mechanism, a screw driving mechanism, a
cam transmission mechanism, a sheave transmission mechanism, an X-axis guide rail, a planar connecting rod transmission mechanism, a
bevel gear mechanism, a
driving circuit and a motion trail feedback unit, wherein the planetary gear mechanism, the screw driving mechanism, the
cam transmission mechanism, the sheave transmission mechanism, the X-axis guide rail, the planar connecting rod transmission mechanism and the
bevel gear mechanism can be connected and located in the box body, the planar connecting rod transmission mechanism, the screw driving mechanism and the
cam transmission mechanism respectively serve as an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism of the platform, and the basic mechanisms and the motion trail feedback unit are made of
organic glass and connected through connecting parts between the basic mechanisms and the motion trail feedback unit. The mechanism motion demonstrating platform is good in demonstrating performance and good in
functional expansion, enables multiple mechanisms to be combined organically in a series mode, is driven by multiple stepping motors, embodies structural cooperation while showing transmission characteristics of the mechanisms and can meet the mechanical course teaching demand in classrooms and enrich classroom teaching contents.