Substrate fixing device

The invention belongs to the technical field of substrate fixing, and discloses a substrate fixing device.The substrate fixing device comprises a supporting frame, a plurality of suction disc assemblies and a plurality of adsorption strip assemblies, wherein top surfaces of the plurality of suction disc assemblies form a bearing plane for supporting a substrate, the adsorption strip assemblies arearranged on the supporting frame and are distributed on the four sides of the supporting frame, the adsorption strip assemblies are configured as an adsorption substrate, and adsorption surfaces of the adsorption strip assemblies are flush with the bearing plane. According to the substrate fixing device provided by the invention, by arranging the suction disc assemblies and the adsorption strip assemblies for use to adsorb the substrate, so that the substrate fixing device has relatively large adsorption capacity is ensured; by adding the adsorption strip assemblies, the substrate is adsorbedfrom four sides of the su