Fully implantable infusion port is an intravenous infusion device implanted under the skin and left in the body for a long time, consisting of an injection seat for puncture and a catheter system inserted into the vein, which can be used for infusion of various drugs, rehydration, nutritional support therapy, blood transfusion, blood sample collection, etc. It has the advantages of low risk of infection, convenient use for a long period of time, simple and convenient maintenance, and high quality of life for patients. However, infusion port implantation is not a permanent solution; while bringing convenience to infusion, the following points need to be noted: 1, pay attention to the use: use a non-damaging needle for each puncture, which can prolong the service life of the infusion port; try to carry out in experienced treatment centers; avoid simultaneous application of the tube to infuse more than two drugs, and flush the residual drugs in the tube with saline between the infusion of two drugs to reduce the blockage of the tube To reduce the occurrence of blockage. 2, pay attention to protection: avoid impact to prevent rupture of the port body, separation of the catheter from the port body; avoid excessive movement of the upper limb on the implantation side, placing the port body, catheter displacement and distortion or even separation; avoid too strenuous physical activities to prevent blood backflow into the catheter to block the tube. 3, pay attention to maintenance: regular monthly heparin saline flush to seal the catheter, using pulsed positive pressure to seal the catheter. 4, pay attention to abnormal conditions: local redness, swelling, pain, timely consultation.