Silicon block fixing device

The utility model discloses a silicon block fixing device. The silicon block fixing device comprises a workpiece plate, a limit block and a glass block which is used for fixedly connecting a silicon block; the glass plate is adhered to one side of the workpiece plate; the limit block is adhered to the workpiece plate. According to the silicon block fixing device, lateral force generated between silicon chips during a cutting process is offset due to abutting of the limit block, stability of the silicon block position is guaranteed, the quality of cut silicon chips is guaranteed, and the production costs are further reduced by improving the yield.