General anesthesia and semi-anesthesia in the anesthesia mode, anesthesia effect, clinical application and other aspects of different. 1. Anesthesia: general anesthesia refers to general anesthesia, anesthesia can be administered by inhalation or intravenous injection of anesthetics, such as midazolam, propofol and so on. Semi-anesthesia is the common name for intraspinal anesthesia, which is the injection of local anesthetics such as bupivacaine into the subarachnoid space around the spinal cord or epidural space. 2. Anesthesia effect: general anesthesia can produce central nervous system inhibition, so that the whole body loss of pain, loss of consciousness. Half anesthesia can anesthetize the lower limbs, lower abdomen and other body parts, while maintaining consciousness. 3. Clinical application: general anesthesia can be used for all parts of the body traumatic surgery, half anesthesia is mainly used for the lower abdomen and lower extremity surgery, such as painless labor and delivery, and sometimes also used for upper extremity and chest surgery. Generally different surgeries require different types of anesthesia, it is recommended that patients consult a specialist, according to the advice of the choice of treatment.