Laser system protection device

The utility model relates to the technical field of light path systems of laser processing equipment, in particular to a laser system protection device which comprises a light path plate, a laser is arranged on the upper side of the light path plate, a clamping ring is arranged on one side face of the laser, and a first sealing lantern ring is arranged on the side, away from the laser, of the clamping ring. A mirror bracket is arranged at the position, close to the laser, of the upper side face of the light path plate, a reflecting mirror is arranged at the upper end of the mirror bracket, a sealing mirror sleeve is arranged on the outer side of the reflecting mirror in a sleeving mode, a right-angle bent pipe is arranged on the sealing mirror sleeve, and quartz glass pipes are arranged at the two ends of the right-angle bent pipe. According to the utility model, through the arrangement of the first sealing lantern ring, the sealing lens sleeve, the quartz glass tube, the right-angle elbow and the second seal