1, before treatment: not easy to overfill, wash the affected area with warm water, especially hands and feet. 2, after treatment: local and corresponding parts of the numbness, sweat, feeling abnormal reaction, this is the normal reaction of the drug, after a few hours can disappear. 3.If there is dizziness, nausea, panic or discomfort during the treatment, the doctor should be informed in time. 4.Sometimes the local pain may be aggravated by the treatment, which is the reaction of the drug, and it will be reduced or disappeared within 24 hours. 5.After the treatment, you should take a rest for about 30 minutes as instructed by the doctor and leave the hospital only after the doctor’s consent. 6, after treatment should pay attention to rest, avoid excessive, strenuous activities. 7.After treatment, care should be taken to keep the puncture site clean and dry for 24 hours, so as to avoid infection at the puncture site and induce serious complications.