A method and a system for digital direct imaging, an image generating method and an electronic device are provided. The method for digital direct imaging includes: obtaining a first image of a first format; converting the first image into a second image of a second format, wherein the second image includes a contour description; generating a correction parameter according to at least one mark on a substrate; correcting the second image according to the contour description and the correction parameter; and performing a rasterization operation on the corrected second image and imaging the second image processed by the rasterization operation on the substrate by an exposure device.