Implantable intravenous port, also known as implantable central venous catheter system, is a closed intravenous infusion system that can be completely implanted in the body to provide long-term intravenous vascular access for patients. Indications: 1, those who need long-term or repeated intravenous medication; 2, those who need chemotherapy drugs applied intravenously; 3, parenteral nutrition and other hypertonic fluid input. Advantages: 1.Significantly reduce the pain of repeated venous puncture; 2.Reduce the number of punctures, reducing the damage to peripheral veins; 3.Reduce the chance of drug extravasation, preventing drug damage to peripheral veins; 4.Improve the quality of life of patients, without affecting normal work life and daily activities, and the infusion port is buried under the skin, not easy to be noticed by outsiders, with little impact on the psychological state; 5.Basically no risk of infection. The infusion port is buried under the skin and usually does not communicate with the outside world; 6. We have carried out this technology, and all of them have been successful.