In clinical practice, after breast cystectomy surgery, doctors usually ask patients to wear sports underwear or wear a chest strap, the main reason is that through a certain degree of pressure, to compress the local wound to stop bleeding, can be very good to reduce the possibility of postoperative bleeding. When wearing sports underwear or wearing a chest strap after breast cystectomy, the pressure should be appropriate, neither too loose nor too tight. Too loose pressure can not play a good role in stopping bleeding, while too tight pressure is likely to cause the patient’s breathlessness, the length of the pressure in about 24 hours can be unlocked. Therefore, after the mastocystectomy surgery to wear sports underwear or wear a chest strap is very necessary, while the local wound should be changed regularly, postoperative discomfort symptoms should go to the regular hospital, to avoid delaying the condition.