The invention discloses a phosphate glass laser cutting process. The process comprises the following steps that (1), the position of a cutting section is enabled to be centered by adjusting laser cutting parameters; (2) in the centered cutting layer position, small-power laser is used for dotting; and (3), proper power is used for normal cutting. According to the phosphate glass laser cutting process, the laser cutting parameters are set, so that the product is cut into a good cutting section (the cutting layer is centered, and extension lines are controlled to be within 30 microns) and planeeffect, so that the problem that the strength of different surfaces of a glass sheet is uneven due to the fact that the cutting effect of a traditional cutting section is not centered is solved.