The invention discloses a robot sewing device. The robot sewing device comprises a bottom plate, supporting legs are welded to the lower end of the bottom plate, a support is welded to the upper end of the bottom plate, a motor is fixedly installed on the inner top wall of the support, a rotating shaft is arranged at the end, away from the bottom plate, of the motor, the rotating shaft is rotationally connected into the support, a square block is welded to the end, away from the motor, of the rotating shaft, a side plate is welded to the bottom plate, a motor is fixedly installed on the side plate, a driving shaft is arranged on the motor, the driving shaft is rotationally connected into the side plate, a clamping block is welded to the end, away from the motor, of the driving shaft, a winding wheel is clamped to the outer side of the clamping block, and the end, away from the driving shaft, of the clamping block is connected to fixing pins through threads. The invention relates to the robot sewing device. The robot sewing device has the advantages that cloth can be conveniently pressed and fixed, and the cloth can automatically move during processing.