The invention provides an electric tricycle carriage. The problem that thecost is increased due to the fact that the integral structure of the carriage needs to be changed because of the structural limitation when the carriage contains objects in the prior art is solved. The electric tricycle carriage comprises a box plate, a plurality of limiting plates, a connecting channel and a connecting column, wherein the box plate is used for placing the objects, is arranged on a vehicle frame and moves along with the vehicle frame simultaneously; a vertical plate is arranged at the end, adjacent to adriving part, of the box plate; the limiting plates are combined and then arranged on the two sides and the other end of the box plate; the connecting channel is arranged on the limiting plate; and the connecting column penetrates through the connecting channel and a connecting block arranged on the box plate in sequence to fix the limiting plates. According to the electric tricycle carriage, freeadjustment can be carried out without a cover plate structure, and the overall adaptability is improved while the cost is reduced.