The invention provides a contact-type frictional power generation energy collecting device based on an origami spring structure, comprising two substrates folded into a continuous W-shaped structure by a flexible plate, and two flexible substrates are inserted into each other so that the creases of the two substrates are perpendicular to each other to form a spring-like structure. A layer of dielectric material is arranged on both side of that substrate. The polarities of the dielectric materials on both sides of the same substrate are the same, but the polarities of the dielectric materials on different substrates are opposite. Under vibration, the whole structure closes first, and then the dielectric material layers on adjacent different substrates contact to generate friction charges. During the recovery of the elastic structure, the friction charge generates an induced electric field, and the electric charge moves between the metal conductor layers on the adjacent different substrates, thereby generating electric energy. The device does not need to use fuel energy, and can convert vibration mechanical energy into electric energy only by means of the device itself. It is a device with few restrictions, high efficiency and environmental protection, and can work in a wide range of frequencies.