The causes of breast lump formation are very diverse and complex. They are endocrine-related, such as elevated estrogen and progesterone changes, emotional changes, environmental influences, lifestyle, genetic factors and other factors that cause lumps to form. There are many benign clinical lesions such as breast hyperplasia, breast fibroids, ductal tumors, and breast tuberculosis, and all benign lesions are in the form of lumps. Breast cancer lumps are not associated with pain, so it is meaningful to differentiate them from others. Breast cancer lumps with uneven surface without pain are called breast rocks in Chinese medicine. The lumps are as hard as rocks and are somewhat different from benign lumps with unclear borders and uneven surface. There are very many lumps in the clinic and there is a certain amount of differentiation. Breast lumps should always be diagnosed in the hospital regardless of whether the patient is in pain or not and whether there are other symptoms. Ultrasound and mammography are done first, and further pathology is performed. Patients are advised to have early diagnosis to prevent lumps. Self-examination after menstruation to prevent the occurrence of lumps for example once a month can also be done at the hospital for regular checkups, once every six months to a year, which can effectively detect and control the occurrence of breast cancer.