The invention relates to a pathological section staining style conversion method. The method comprises the following steps: receiving a digital section full-field image of a stained pathological section to be processed; obtaining a region of interest on the digital slice full-field graph; performing quality evaluation on the regions of interest, and repairing the regions with unqualified quality evaluation to obtain regions of interest with qualified quality evaluation; receiving an expected dyeing effect image; and selecting a corresponding cyclic adversarial generative network according to the expected dyeing effect image, and converting the region of interest into an image effect similar to the expected dyeing effect image. According to the method, firstly, image restoration is carriedout on a digitalized dyed pathological section, a pathological-section-free image which is poor in dyeing quality and unqualified in image quality evaluation is restored to a standard digital sectionfull-field image, then intelligent conversion is carried out, and the pathological section is converted into an expected dyeing effect image.