A grating-type processing method for a transparent page comprises: scanning the transparent page twice, in the first scanning, taking grammatical interpretation to the page description file of the transparent page, dividing the page into areas, and writing primitive object information and transparent parameters generated into the intermediate file; in the second scanning, reading the primitive objects and the transparent parameters in turns from the intermediate file, and assembling the page dot matrix in each area. A grating-type processing device is also disclosed, which includes a grammatical interpretation unit, a dividing unit, a file memory unit and an assembly unit that processing grammatical interpretation, dividing the page into areas, partitioning the transparent page area and non-transparent page area, and grating-type processing according to the type of page area of the transparent page and the non-transparent page and the primitive object information and the transparent parameters, and assembling the page dot matrix in each area