Disclosed is a method for printing an image, comprising a step of rasterizing an image to be printed in view of a first resolution to generate a first data bitmap; a step of splitting the first data bitmap according to a ratio of the first resolution to a second resolution to generate second data bitmaps; and a step of outputting the second data bitmaps to a printer with the second resolution for printing. Disclosed is also a device for printing images. The method and device for printing an image may solve the problem in the prior art that the definition of an image printed from a printer is too low and improve the definition of an image printed from a printer.