A text separation method, a text separation device, and an image formation apparatus are provided. The text separation method includes obtaining a pixel value of each pixel in a to-be-processed image having a plurality of pixels; determining an edge intensity value of each pixel according to pixel values of each pixel and a preset number of pixels adjacent to each pixel; determining a binary map corresponding to the to-be-processed image according to the edge intensity value of each pixel; determining a text region determination value of each pixel according to the binary image and the pixel value of each pixel; and determining text-body regions and non-text-body regions in the to-be-processed image according to the text region determination value of each pixel.