Laser spindle box

The utility model relates to the technical field of laser processing, and particularly discloses a laser spindle box. In some laser cutters, a probe is used as a positioning piece of a workpiece to detect whether the clamped workpiece is in place or not. Due to the fact that certain soot can be generated in the laser cutting process, the probe needs to be reset into the spindle box, and the probe is prevented from being polluted by the soot. The spindle box is provided with a through hole corresponding to the extending position of the probe so as to ensure that the probe can enter and exit normally. When a through hole is formed in the spindle box, cigarette ash can enter the spindle box along the through hole, and devices such as a laser receiver can be damaged under the influence of the cigarette ash, so that the laser spindle box disclosed by the utility model has the advantages that a dustproof cover plate is arranged at the through hole of the spindle box; the through hole is sealed through the dustproof