Breast nodules can be classified into grades 0-6 according to breast imaging reports and data, with different intervals between reviews for different grades of breast nodules. Benign nodules are usually reviewed about once every 3 months; the higher the grade, the greater the likelihood of malignancy and patients should be treated promptly. Grade 0 usually requires re-evaluation or a combination of previous results; Grade 1 indicates no abnormal findings and is a normal breast; Grade 2 is a benign lesion of the breast, and patients are generally advised to have a breast ultrasound or mammogram once a year; Grade 3 indicates a higher likelihood of benign but less than 2% of malignancy, and is recommended to be reviewed once every 3-6 months; Grade 4 has the possibility of suspicious lesions, and patients are advised to have a biopsy in a timely manner; Grade 5 is highly suspicious. Patients are recommended to have timely biopsy; Grade 5 is highly suspicious of malignancy and appropriate therapeutic measures should be taken; Grade 6 is diagnosed as malignant by biopsy. Therefore, regular review of breast nodules can help patients with early detection, early diagnosis and early treatment, providing conditions for better treatment and prognosis.