The invention provides an auxiliary transportation device for an assembled partition wall. The auxiliary transportation device comprises a base and a fixing frame, the fixing frame is a square-tube-shaped frame body and is fixedly connected to the base, a slope is arranged on the side, in the direction of an opening of the fixing frame, of the base, a plurality of partition plates which are vertically arranged are arranged in the fixing frame, and a partition wall plate is fixedly installed between every two partition plates; and two fixing plates are symmetrically arranged at the two oppositeends of each partition plate. By arranging the sliding type partition plates, the distance between the partition plates can be adjusted at will, the device can transport partition wall plates of different specifications, universality is high, air bag type elastic pressing is adopted, the structural design is ingenious, and transportation is stable; through coating type protection of a tenon-and-mortise structure of the partition wall plates, the problem that the tenon-and-mortise structure is damaged during transportation is solved in a targeted mode, it is guaranteed that the partition wallplates are smoothly assembled, and waste of building materials is avoided; and through the design of the slope provided with transmission rollers, the partition wall plates are convenient and fast toassemble and disassemble, and time and labor are saved.