The utility model relates to a glass clamping device for grinding, including the bottom plate, and set up grip the stick on the bottom plate, include still that parallel arrangement is in bottom platedifferent from the setting grip two limiting plates on the stick side, both ends set up respectively two form two pinch -off blades of the frame mode of laying in order to be used for pressing from both sides tight glass artifacts on the limiting plate and through drawing close each other, set up limiting plate both ends position department is used for the block fixed the block mouth of pinch -off blades sets up in the block mouth and be used for pinch -off blades limited sliding's slide rail sets up in the block mouth and be used for promoting to both sides the elasticity reset unit of pinch-off blades, and set up the block mouth is used for promoting the magnetic force that pinch -off blades were drawn close to the middle part promotes the unit. The utility model has the advantages ofsimple structure is effective, and it is swift to press from both sides tight convenient operation, presss from both sides tight intensity and big and make things convenient for grinding operation.