The invention provides and relates to a method for grinding the gradient slope of glass and relates to the technical field of glass grinding. The method is designed for solving the problems that an existing machining device cannot grind variable-width slopes, simplex in product form and low in product additional value. The method for grinding the gradient slope of the glass comprises the followingsteps of carrying out three-point positioning; determining the initial machining position of the to-be-machined glass; making the numerically controlled axes C1, X, Y and C2 of a glass edge grindingdevice back to zero; judging the property of a to-be-machined edge of the to-be-machined glass; determining that the to-be-machined edge is a machining path of a spline; determining the coordinates ofthe grinding start point and the grinding end point of the to-be-machined edge and the corresponding width and depth; determining the tool setting position of an abrasive wheel; figuring out the coordinates of the gradient slope of the to-be-machined glass outline on the numerically controlled axes C1, X, Y and C2, and inputting the coordinates into a numerically-controlled machine tool; and determining the grinding inclination angle of the abrasive wheel. The method for grinding the gradient slope of the glass can grind the variable-width slopes, the product machining form is enriched, and ahigh additional value is achieved.