An assembled drawer having a bottom plate, a rear plate, and two side plates; the rear plate and the two side plates are detachably installed on the bottom plate; the rear plate is connected to a rear side of the bottom plate, and the two side plates are connected to a left side and a right side of the bottom plate respectively, and the rear plate and the two side plates are connected to the bottom plate by engagement of fastening blocks into fastening grooves; the two side plates are fixed to a left side edge and a right side edge of the rear plate respectively through fasteners, and the rear plate and the two side plates are erected on the bottom plate to define a storage space on the bottom plate. The drawer has a simple structure and easy to assemble and disassemble.