General anesthesia is harmful to the body, because general anesthetics is through the vein into the body, the role of the central nervous system, that is, the brain, produce sedation, hypnosis, analgesia, muscle relaxation, loss of consciousness, and then through the plasma, liver, kidney detoxification, excretion through the urine. In the process of acting on the brain, anesthetics have an effect on all organs of the body, acting on the heart, resulting in slow heart rate, low blood pressure; acting on blood vessels, causing vasodilatation, lower blood pressure; acting on the liver, causing slight abnormalities in liver function and so on. Lumbar anesthesia is only a small amount of local anesthetics on the spinal nerves, resulting in lower body anesthesia, does not affect the function of the organs of the whole body.