Needle-sickness is due to the strong stimulation of the human vagus nerve leads to excitement, which causes peripheral vasodilatation, heart rate slowdown, blood pressure drop, resulting in a transient insufficient blood supply to the brain and produced. Prevention is mainly to try to communicate with the patient before the operation, do a good job of explaining the relevant work, so that it is in a relaxed state of mind and eliminate fear. During the operation process, try to let the patient take a comfortable position, and keep the treatment room with clear air and comfortable environment. Once the needlestick occurs, it is recommended to stop the operation immediately, and at the same time, let the patient in a flat position and take 50% glucose water or warm water orally. After appropriate rest, the symptoms will be quickly relieved and improved, for the more serious symptoms can also be given oxygen, or the establishment of intravenous access to give rehydration and other symptomatic treatment.