The efficacy of bloodletting at Guanchong acupoint includes clearing heat and removing toxins, activating blood circulation, etc. It can assist in the treatment of tinnitus, headache, elbow pain and other conditions. Bloodletting refers to radiotherapy, also known as blood-stabbing therapy, which is a commonly used method of treating diseases in Chinese medicine. The Guanchong point belongs to the Shaoyang Sanjiao meridian and is located about 0.1 inch beside the corner of the nail on the ulnar side of the ring finger. Usually, bloodletting therapy on Guanchong point can clear heat and detoxification, activate blood circulation and other effects. Therefore, it can assist in the clinical treatment of tinnitus, headache, elbow pain, deafness, blurred vision, eye redness and pain, sore throat, fainting and other diseases. In a word, must acupuncture point release therapy must be carried out by the operation of professional doctors, do not operate on your own, so as not to delay the treatment.