The utility model relates to a vehicle vibration power generation device with a USB interface. The device adopts a heavy hammer and a double-acting type ratchet wheel as a vibration pickup mechanism, a gear set is a vibration mechanical energy transmission mechanism, a direct current permanent magnet generator is an electromechanical energy conversion mechanism, and an electric energy processing circuit with a USB interface processes irregular direct current electric energy, and supplies power to a vehicle-mounted electronic device. The vehicle vibration power generation device uses the double-acting type ratchet wheel mechanism for vibration pickup, converts rectilinear motion in vehicle running to rotational motion, and drives a low damping permanent magnet direct current generator to work through an efficient gear mechanism, and compared with a common linear type vibration power generation device, the vehicle vibration power generation device with USB interface is advantaged in that the transmission and conversion efficiency of vibration mechanical energy can be significantly improved. The vehicle vibration power generation device with the USB interface generates power by renewable energy, the vibration pickup efficiency, and the energy transmission and conversion efficiency are high, the working life is long, the USB interface is suitable for being applied to most vehicle-mounted electronic devices, and the universality is strong.