Stellate ganglion block is a treatment method, the duration of the treatment effect is temporary or permanent, depending on the body type of each person, the effect is maintained for a different period of time. Stellate ganglion block, a minimally invasive treatment commonly used in pain clinics, is a method in which local anesthesia is injected into the surface of the stellate ganglion to infiltrate it with a medication, thereby blocking the sympathetic activity in the area innervated by the cervical sympathetic trunk, the cervical sympathetic ganglion, and the anterior and posterior ganglionic nerves. The duration of stellate ganglion block is related to the block site and block method, and also varies from person to person. For example, brachial plexus block can generally last about one month, but some patients can maintain the therapeutic effect for two months. Stellate ganglion block acts on the autonomic nervous system and endocrine system, and can be used to treat a variety of diseases, commonly used in the treatment of essential hypertension, essential hypotension, hyperthyroidism, anorexia, insomnia, hair loss, headache, cerebral vasospasm and other diseases. Complications also exist in the treatment of stellate ganglion block, for example, downward puncture is too deep, mistakenly injecting local anesthetic into the vertebral artery will cause the patient’s loss of will, local anesthetic injected into the subarachnoid space will cause respiratory and cardiac arrest, etc. Therefore, the stellate ganglion block operation should be careful and cautious, and to prevent the occurrence of complications. If you feel unwell, you should go to the hospital in time to avoid delay.