Bruising after acupuncture may be due to vascular injury caused by needling, or the patient’s blood clotting mechanism is impaired. 1. Vascular injury: the patient may be due to the practitioner’s technique is too heavy, or did not avoid the blood vessels for needling and other reasons stabbed the local blood vessels, which led to subcutaneous bleeding at the site of needling, and then appeared in the bruise. 2. Coagulation mechanism disorders: it may also be because the patient itself has a blood clotting mechanism disorder, acupuncture caused by subcutaneous bleeding bruises, general coagulation mechanism disorders in patients, not recommended for acupuncture. Acupuncture bruises, if the symptoms can not be reduced, and accompanied by pain and discomfort, it is recommended to actively go to the hospital for consultation and treatment, so as not to delay the condition of the adverse consequences.