The severity of breast nodules is related to the size, nature, number and growth rate of the nodules and the impact they have on the body, and cannot be generalized. Breast nodules are a clinical condition that refers to the development of nodular lesions in the breast. The severity of breast nodules varies due to the extent of the lesion. In general, breast nodules are clinically classified as 0-6 according to BI-RADS classification, the higher the level, the higher the severity of the lump, below level 3 are mostly benign lesions, which can be temporarily not treated and can be reviewed regularly. Treatment. Patients should eat reasonably in life, pay attention to a healthy lifestyle, quit smoking and drinking, and avoid long-term heavy oral contraceptive use.