Tumor patients are not allowed to administer chemotherapy by infusion through the back of the hand, which will lead to phlebitis of the arm and will soon produce venous occlusion. If the chemotherapy drug leaks locally outside the blood vessels, it will lead to local skin and subcutaneous tissue necrosis, and in severe cases the ulceration will not heal for months. Therefore, deep vein placement must be performed during chemotherapy, commonly through peripheral venous puncture central venous placement (PICC), PICC is a puncture from the elbow, put in a very thin and long infusion tube, the irritating chemotherapy drugs through this canister directly into the superior vena cava, because the blood flow is fast, the high concentration of chemotherapy drugs is quickly diluted, so it will not irritate the blood vessels, and will not backflow to the puncture The PICC line requires regular heparin saline flushing of the line to avoid blockage of the line. the PICC line is not very convenient as it retains a section of the infusion line connector at the elbow, which can interfere with the patient’s bathing and swimming. A more comfortable and safe device than the PICC is the “IV port”. The IV port is also known as an implantable drug delivery device. A small plastic infusion port (flat box) is buried under the skin of the chest and connected to an infusion catheter directly into the superior vena cava. Each time an infusion is given, the needle is inserted directly into the port by puncturing the skin, without any tubing connections outside the skin, which can change the long and frequent central venous injections and drug infusions into simple subcutaneous punctures. It can reduce the vascular irritation caused by repeated punctures, reduce the pain of patients during injection, reduce the incidence of infection, and provide patients with a better quality of life. The infusion port is completely buried in the body, there is no body surface wound, and the catheter cannot be touched when it is used, so it is more humane and more convenient than PICC placement. Therefore, it is the access device with the lowest incidence of infection. If long-term or repeated (more than 3 months is recommended) infusion therapy of various kinds is needed, such as antimicrobial infusion, intravenous rehydration, blood transfusion and blood draw, etc.; input of irritating drugs such as chemotherapy drugs, various hypertonic fluids; IV port placement is done by a surgeon in the operating room through a minor surgery to introduce the catheter into the appropriate vessel, and the syringe will be buried under the appropriate skin. When a patient with a buried IV port needs intravenous medication, a specially trained nurse will infuse the medication through a non-invasive needle into the IV port under the skin. After the wound has healed (approximately 5-7 days), the patient may shower. External impact should be avoided at the buried infusion port site. Patients with problems such as redness, swelling, pain and poor infusion at the infusion port implantation site should promptly consult their healthcare provider for treatment. Maintenance such as flushing and sealing of the intravenous infusion port should be performed once every four weeks (one month) during the interval between treatments (when not infusing), and it is recommended to return to the hospital for maintenance. Patients with IV port implantation do not interfere with performing general daily work, household chores, walking, etc. Avoid doing strenuous shoulder and chest exercises, such as strenuous ball games, swimming, etc. Avoid doing heavy work to prevent the buried subcutaneous drug cartridge injection seat from flipping and catheter twisting. The advantages of the intravenous infusion port compared with PICC are low risk of infection (completely buried under the skin, no open channels on the body surface, simple care and maintenance operation process) improve the quality of life of patients (bathing and swimming, aesthetic, reduce the number of punctures, reduce pain, reduce irritation to protect the blood vessels) long service life (catheter with normal function and no complications city, can be used for life).