The side effects of interventional procedures are concentrated in two aspects: 1, tumor intervention, the use of chemotherapeutic drugs in the process of intervention, embolization drugs, local tumor necrosis, detachment, causing the corresponding reaction, also known as post-embolization syndrome, which can be commonly seen as fever, abdominal pain, and local discomfort; 2, the discomfort caused by special equipment, intervention involves stents, stents, stents, the most common esophageal stents, intestinal stents, biliary tract stents, when the lesion When the lesion compresses the esophagus, gastric tube and other organs, the stent is used to prop open, and this process will obviously feel the sense of foreign body in the body. If a stent is placed in the trachea, it will also be particularly sensitive, but with the prolongation of the adaptation period, the body will slowly adapt to the process and will not feel uncomfortable.