Breast pain during breastfeeding needs to be judged according to the location of the pain and the specific disease: 1. If the pain is localized in the breast and accompanied by a lump, consider the symptoms of breast pressure, blockage of the milk ducts and other symptoms caused by the accumulation of milk, this situation requires timely consultation at a regular hospital, so that professional doctors help lactation treatment. Avoid prolonged accumulation of milk, resulting in bacterial invasion caused by acute mastitis symptoms, during the period as far as possible to let the baby normal breastfeeding, do not apply local heat before lactation to avoid aggravating the symptoms; 2, chest pain if located on the left side of the lower edge of the breast, after the sternum, also consider heart disease caused by the more common myocardial ischemia, myocardial infarction, etc., the typical pain symptoms are squeezing, need to seek timely medical attention, in serious cases can be life-threatening The typical pain symptoms are crushing and require prompt medical attention, which can be life-threatening in serious cases.