The invention discloses a convenient-to-adjust cutting device, which comprises a workbench, wherein supporting plates are fixedly connected to the left side and the right side of the top of the workbench, the tops of the two supporting plates are fixedly connected through the bottom of a fixing plate, a driving motor is fixedly connected to the left side of the top of the fixing plate, a driving rotating shaft is fixedly connected to the output shaft of the driving motor, and the bottom end of the driving rotating shaft penetrates through the fixing plate and extends to the exterior of the fixing plate. According to the invention, through the matching of the driving motor, the driving rotating shaft, the driving wheel, the first bearing, the rotating shaft, the driven wheel, the transmission belt, the threaded rotating shaft, the threaded block, the second bearing, the electric push rod, the cutting motor, the cutting rotating shaft and the cutting blade, when glass is cut, the distance between a glass plate and a cutting knife can be adjusted, so that the cutting pressure can be adjusted, the cutting speed is increased, the application range is large, the production cost is reduced, and great convenience is brought to a user.