Glass positioning device for engraving and milling machine and engraving and milling machine

The invention relates to a glass positioning device for an engraving and milling machine and the engraving and milling machine, a positioning mechanism (2) of the glass positioning device comprises a plurality of positioning blocks which are arranged at intervals and are in one-to-one correspondence with glass bearing seats (3) of the engraving and milling machine, and the positioning blocks are provided with positioning surfaces which can be connected with to-be-positioned glass (4) of the glass bearing seats (3); the positioning position is used for correcting the glass (4) on the glass bearing seat (3), and the resetting position is used for loading the glass (4) on the glass bearing seat (3); a driving mechanism (1) of the glass positioning device is connected with a positioning mechanism (2) and is used for driving the positioning mechanism (2) to be switched between a positioning position and a resetting position. According to the technical scheme, the glass positioning device for the engraving and mill