The invention provides a printing processing method, device and printer. The method which comprises the following steps that: a special-color content-containing page to be printed is converted into multi-color dot matrix data which can be identified by printing equipment, wherein the printing equipment is a set of printing equipment provided with a special color ink cartridge; and the multi-color dot matrix data corresponding to special-color content are synthetized into special color dot matrix data, so that the printing equipment can print the special color dot matrix data through the special-color ink cartridge. With the technical scheme provided by the invention adopted, files containing special-color content can be printed; the adjustment of the layout of the page to be printed is not required when the page to be printed is printed; and therefore, problems of complex process and low efficiency of the printing of the files containing the special-color content can be solved.