The invention relates to the technical field of touch screen production, in particular to a glass cover plate preparation process. The preparation process comprises the following steps: the first stepof rough shape cutting; the second step of CNC forming; the third step of first ultrasonic cleaning; the fourth step of first visual inspection; the fifth step of strengthening treatment; the sixth step of flat grinding treatment; the seventh step of second ultrasonic cleaning; the eighth step of plasma treatment of a glass cover plate; the ninth step of placing the glass cover plate in a printing fixed seat; the tenth step of automatically checking the glass cover plate for visual defects; the eleventh step of placing IR ink and alignment line ink in a printing frame; the twelfth step of starting a double scraper printing machine; the thirteenth step of drying and curing; the fourteenth step of third ultrasonic cleaning. The glass cover plate preparation process has the advantages of being high in production efficiency, capable of saving resource and energy and low in product defect rate.