Acupuncture includes “needling” and “moxibustion”, which in this case refers to needling the arterial vessels. Bleeding after needling is generally referred to as capillary bleeding, not arterial bleeding, and under normal circumstances will not cause more serious effects, so there is no need to be overly nervous. However, if the needle does reach an arterial vessel, a physician should be consulted immediately and the needle should be left in place while waiting for specialized treatment. When the needle is found to have pierced a capillary or small arterial vessel, a physician should be asked to look at it immediately, start the needle, and apply pressure to stop the bleeding. If a small amount of subcutaneous bleeding and localized small pieces of bruises, usually do not need to be treated, can subside by themselves. If the local bleeding is more, forming hematoma, swelling and pain is more intense, bruise area is large, can be first cold compress to stop bleeding, and then hot compresses or in the local gently rubbed, in order to promote the absorption of blood stasis, dissipation. However, when the needle pierces a large arterial vessel, a physician must be asked to look at it immediately, while leaving the needle in place and waiting for specialist treatment. Acupuncture needles are thin and generally not life threatening, but may bleed more and still require attention. When performing acupuncture treatment, try not to do it when you are hungry, tired and mentally overstressed. And it should be done under the guidance of a professional practitioner, never self-acupuncture.