Breast nodules are a clinical manifestation that can be detected by physical examination or imaging, mostly caused by some breast diseases, endocrine disorders and other factors, and can be solitary or multiple, with benign and malignant; breast nodules are not a disease in themselves, but are mostly seen in breast hyperplasia, breast fibroadenoma, mastitis, breast cancer and other diseases, and the severity should be judged according to the benignity and malignancy of the nodules. It is common in the following cases: 1. Mastoproliferative disease: it is a common breast surgery disease, mostly due to the imbalance of estrogen and progesterone ratio, resulting in proliferative changes in breast tissue, single or multiple tough nodules in the breast, and symptoms such as breast swelling and pain along with menstrual cycle, nipple overflow, etc. It is a benign lesion, most of which are not serious and can be relieved by symptomatic treatment, and is often treated with traditional Chinese medicine. 2. Adenoma: It is a common benign tumor of female breast, usually related to endocrine disorders, and can appear as round or oval nodular masses with slightly hard and elastic texture, good mobility, no adhesion with surrounding tissues, and most patients have no obvious symptoms. Breast fibroids are generally not serious and can be surgically removed if necessary, and are less likely to become malignant. After removal, routine pathological examination is required; 3. Mastitis: often occurs in lactating women, after milk accumulation, water is gradually absorbed to form local hard lumps, which are nodule-like and can be accompanied by local redness, swelling and heat pain. Breast cancer is more serious than other diseases, and the progress of the disease should be determined according to the stage of the cancer and the extent of infiltration. Early stage breast cancer can be effectively relieved by early detection and early treatment, while late stage cancer metastasis is relatively serious and the prognosis is poor; 5.