The invention discloses an electromechanical dual-purpose motor tricycle which comprises a frame consisting of four beam keels and a flat frame assembly, wherein a rear compartment is arranged at the top of the rear side of the frame; the bottom of the rear side of the frame is connected with a rear axle assembly through a plate spring shock absorption mechanism; a rear wheel is arranged at each of the left and right ends of the rear axle assembly; an air feeding pipeline for cooling a power device with air is arranged on the frame; a braking system for braking the rear wheels is arranged on the frame; a dumping device and a dual-purpose structure which can be either used as a backrest or used as a passenger seat are arranged between the flat frame assembly and the rear compartment; and an electromechanical dual-purpose power device is adopted, and a front wheel is improved into a self-walking structure. The electromechanical dual-purpose motor tricycle is firm, durable, high in loading capacity and more uniform in load distribution; due to dumping, the labor is saved, and the functional effect of the backrest is enhanced; by the adoption of the plate spring shock absorption structure with the front part fixed and the rear part movable, the safety and the comfortability are improved; and the electromechanical dual-purpose motor tricycle is energy-saving, environment-friendly and emission-reducing, and has a function of continuous long-distance running.