Neck infusion after patient’s surgery is a commonly used method of infusion in the clinic. Puncture placement in the subclavian vein or internal jugular vein belongs to central venous puncture, and compared with peripheral vascular infusion, central venous infusion mainly has the following advantages: 1. The diameter of subclavian vein or internal jugular vein infusion is thicker, which is less prone to leakage of the blood vessels. Especially for the elderly patients, the peripheral blood vessels are brittle, and the use of peripheral vascular infusion after surgery can cause repeated leakage of blood vessels. The use of central venous infusion can reduce the pain caused by repeated puncture.2. Central venous vessels are more tolerant to stimulating drugs, such as intravenous infusion of potassium ions, chemotherapy drugs, the patient may not have obvious pain symptoms. If peripheral vascular infusion is used, it will cause obvious pain, inflammation and other complications in the local blood vessels.3. Central venous infusion can liberate the patient’s hands so that the patient can move freely and reduce the pressure of prolonged infusion.