The invention discloses an improved mailbox device. The device comprises a first base, a first linking rod is fixedly arranged at the lower end face of the first base, a circular ball is fixedly arranged at the lower end face of the first linking rod, a moving belt is arranged below the first base, a first fixing connecting block is fixedly arranged on the upper end face of the moving belt, the first fixing connecting block is rotatably and cooperatively connected with the circular ball, the upper end face of the moving belt is provided with first assembling connecting blocks which are symmetric in left and right, the first assembling connecting blocks are internally and fixedly provided with first sliding connecting cavities with downward openings, hole cavities are formed in hole cavityupper end walls, the hole cavities are communicated with external space, the first sliding connecting blocks are slidably arranged in the first sliding connecting cavities, lugs are fixedly arranged on the upper end faces of the first sliding connecting blocks, and first linking arms are rotatably arranged at the front end faces of the lugs. The device has the advantages that the structure is simple, the use is convenient, a clamping claw type structure is adopted by the device, automatic placing and transporting of the mailbox are achieved without the direct participating of workers, and therefore the convenience of transportation is effectively improved.