The utility model discloses a modularized
pickup truck rear bucket expansion frame which comprises a supporting frame, an installation frame is installed on the top of the supporting frame, the supporting frame comprises two sets of symmetrically-arranged supports, a cross beam is connected between the two supports in the same set, a longitudinal beam is connected between the two supports on the same side, and the longitudinal beam is connected with the installation frame. The installation frame is provided with two parallel and symmetrical fixed beams, the tops of the two supports on the same side are connected through the fixed beams, and a plurality of movable beams are installed between the two fixed beams. According to the modularized
pickup truck rear bucket expansion frame, the supporting frame and the mounting frame which are modularly designed are adopted, the supporting frame can be used as a base of an expansion platform, the mounting frame can be used as a roof platform and can be used for mounting equipment such as a luggage rack, a roof tent, a water tank and a bicycle, the functions are diversified, the mounting frame can be disassembled and assembled according to needs, and the practicability is high. The use flexibility is high.