Fever of different degrees will occur after the intervention surgery, and most of the cases are low fever. The causes and treatment of fever after interventional surgery are as follows: 1, necrosis absorption fever: it can be treated symptomatically by physical cooling methods, such as ice compresses, alcohol wipes, or the use of anti-inflammatory pain suppositories and other drugs can control fever without special treatment; 2, bacterial infection: due to the imbalance of gastrointestinal flora after the embolization, the medical term for gastrointestinal bacterial translocation, that is, the normal bacteria of gastrointestinal tract migrate into the bloodstream through the intestinal mucosa to trigger infections. In addition, improper surgical operation leads to bacteria entering into the blood circulation through surgical instruments. Once bacteria enter into the bloodstream, it is called bacteremia, and the new antigen enters into the body will cause fever. This fever requires aggressive intervention with antibiotics, and once bacteria are detected entering the bloodstream causing fever, prompt treatment intervention is necessary.