The reasons for wearing a bra chest pain are: 1, underwear too tight will compress the chest, so that the chest blood circulation is not smoothly caused by pain, usually the correct choice of underwear size and type, advocate chest liberation, do not exert excessive pressure. 2, underwear material problems, allergies to underwear materials will make the skin of the chest red, pain, itching and other symptoms, it is recommended to wear cotton material underwear, less wear chemical fiber material clothing. 3, breast The pain caused by the lesion itself, need to go to the regular hospital to check the ultrasound, check whether there are breast fibroids, cysts, breast inflammation and other diseases, targeted systemic treatment. 4, menstrual problems, some women during menstruation will produce breast pain, lumbago and other phenomena, belong to the normal phenomenon, no special treatment, if the pain is severe to go to the hospital. 5, mental and emotional factors, depression tendency, anxiety disorders, patients with depression, depression, The patient with anxiety disorder in the mental tension or have had a bad experience wearing underwear, again wear will produce pain.