The pain of breast cancer is breast mass pain, which is usually dominated by persistent distension, and most of them are related to menstruation. Persistent swelling and pain are all mild and moderate, which are not easy to be taken seriously by patients, but some patients show painlessness, that is, some breast lumps will not show pain. Therefore, the above situation will not be taken seriously and will delay the consultation, which in turn will cause the progression of the disease and delay the treatment. Breast cancer is a breast disease, as a common female malignant tumor, the matters that should be paid attention to in normal times include: 1, dietary adjustments: try to eat a light diet, moderate control of meat and vegetables; 2, mental regulation: avoid long-term depression, tension, anxiety, you should find a way to relax yourself.