Bloodletting can not play a role in emergency cerebral infarction patients, cerebral infarction is due to the blood flow of blood vessels in the brain is suddenly interrupted, resulting in acute neurological deficits in patients, if the infarction area is relatively large, the patient will be conscious of the coma or lethargy and other problems. Bloodletting does not improve blood flow to the patient’s brain, so it is not useful in the emergency treatment of cerebral infarction. When a patient has an acute cerebral infarction, it is important to consult a hospital immediately and seek ultra-early treatment, giving the patient thrombolysis, descending fiber, anticoagulation, antiplatelet and other programs for treatment. At the same time, brain protection is given to save the patient’s neurological function and try to save the ischemic semi-dark band. In the later stages, if the patient has limb movement inflexibility or speech clumsiness, etc., the patient needs to do systematic rehabilitation therapy to help the patient to recover, and bloodletting can not play these roles.