Walking chest pain is considered to be the following possibilities: 1, mammary hyperplasia, there will be breast hard lumps, breast pain, especially in the future of the menstrual period when the pain is more intense, the serious can not touch the chest, after the onset of menstruation symptoms relief; 2, breastfeeding period of the women, may be by the milk accumulation of mammary gland clogging, distension, the formation of the hard lumps, when walking, due to the friction of the clothing touched by the pain; 3, mammary gland Inflammation caused by pain; 4, underwear is not suitable, too tight will strangle the chest pain, too loose may be walking up and down the breast fluttering pain; 5, mammary fibrous tumor or breast cancer, etc., it is best to go for further examination.