Mammograms enhancement is very essential for detecting and diagnosing breast cancer at the early stage. In this paper, we propose a new enhancement method of mammograms based on intuitionistic fuzzy sets and type-2 fuzzy sets. Sugeno type intuitionistic fuzzy generator is used to construct a intuitionistic fuzzy set and a new membership function is defined using the Hamacher T co norm, and the final enhanced image is obtained using the arithmetic fusion operators. Experiments are performed on the cropped region of interest of real mammograms, and the comparison and evaluation of enhancement performance demonstrate that the proposed method improve the diagnostic efficiency by improving the contrast of the abnormal regions and fine details in mammograms.