The obvious bulge above the eye of the needle after blood donation is generally due to the hematoma formed by the extravasation of arterial blood through the eye of the needle into the subcutaneous after the local pressure time is too short after the patient donates blood, the following treatment methods can be adopted: a. Continue local pressure at the eye of the needle for 5-10 minutes, the eye of the needle can coagulate on its own, which will not cause extravasation of blood to aggravate the bulge, and can promote the faster absorption of extravasated blood, the pressure on the eye of the needle must not be localized When pressing the eye of the needle must not be localized kneading, so as not to cause the expansion of the bulge. Second, after pressing the eye of the needle local bulge accompanied by pain, at this time can be wet compress through hot water bag or hot towel local 3-5 minutes, 3-5 times a day, pay attention to the external compress can not cause local skin burns, through the local external compress can effectively improve local blood circulation, promote the faster absorption of the bulge to reduce pain.