The invention discloses a glass grinding miller and a use method thereof, and relates to the technical field of glass machining. The glass grinding miller and the use method thereof mainly aim to lower the screen breakage rate of liquid crystal glass substrates in the grinding process. According to the technical scheme mainly adopted, the glass grinding miller comprises a glass adsorption platform and a grinding wheel; the glass adsorption platform comprises a worktable batten and a vacuum air suction pipeline; an adsorption groove is formed in a supporting plane of the worktable batten, and M first ventilation channels distributed dispersedly communicate with a groove wall and/or a groove bottom of the adsorption groove, wherein M is a positive integer greater than or equal to 3; and the vacuum air suction pipeline communicates with the M first ventilation channels. Compared with the prior art, the glass grinding miller and the use method thereof have the advantages that the adsorption groove can generate more-balanced acting force on the glass substrates, and therefore the glass substrates can be adsorbed on the worktable batten more stably and firmly, and the screen breakage rate of the liquid crystal glass substrates in the grinding process can be lowered.