The breast grades are derived from the BI-RADS classification, which stands for the American Radiological Association Breast Imaging Reporting and Data System and is divided into grades 0-6, as follows: i. Grade 0: refers to an incomplete assessment. II. Grade 1: Refers to negative results with no abnormal changes found, i.e., normal breast. III. Grade 2: benign lesions, malignancy can be basically ruled out and regular review is sufficient. Grade 3: basically benign lesions, the general lesion malignancy rate is less than 2%, regular review is recommended. V. Grade 4: suspicious malignant lesions, requiring clinical intervention by physicians, this grade can be further divided into three categories 4a, 4b, 4c, 4a requires biopsy, the possibility of malignancy is less than 10%, such as biopsy benign results can be trusted, can be transferred to six months follow-up, 4b tends to be malignant, the possibility of malignancy in 10% -50%, 4c further suspected of malignancy, the possibility of 50% -94%. Sixth: grade 5, malignant possibility ≥95%, should take an aggressive diagnosis. VII: Grade 6: A lesion that has been biopsy-proven malignant but has not been treated.