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 to puncture from the elbow and put in a very thin and very 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 that goes directly into the superior vena cava. Each time an infusion is given, the needle is inserted directly into the infusion port by puncturing the skin, and there is no connection of any tube outside the skin, which can change the long-term and frequent central intravenous injection and drug infusion into a simple subcutaneous puncture. 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 at present. If long-term or repeated (more than 3 months is recommended) infusion treatment of various kinds is needed, such as antimicrobial infusion, intravenous rehydration, blood transfusion and blood draw; input of irritating drugs such as chemotherapy drugs, various hypertonic fluids; IV port placement is done by a doctor in the operating room through a minor surgery to introduce the catheter into the corresponding blood vessel, and the syringe will be buried under the appropriate skin. When a patient with an IV port buried needs intravenous medication, a specially trained nurse will infuse the medication through a non-invasive needle into the subcutaneous IV port and that’s it. 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 site of infusion port implantation should promptly seek medical advice for treatment. Maintenance such as flushing and sealing of the intravenous infusion port should be performed 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 an IV port implantation do not interfere with 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 operation process of care and maintenance), improved quality of life of patients (bathing and swimming, aesthetics, reduced number of punctures, reduced pain, reduced irritation to protect the blood vessels) and long use period (catheter with normal function and no complications city, can be used for life).