The diagnosis of vascular-associated infections is the diagnosis of catheter-associated infections in the blood vessels, which are treated with catheters placed in the blood vessels, such as central venous lines, etc. The catheters need to be evaluated daily by the physician during treatment and observed for infection. If the catheter is found to be infected, the infected catheter must be replaced in a timely manner to prevent the condition from worsening with the infected catheter. Criteria for vascular-associated infection: 1) is a thick fluid or erythema in the vein; 2) is a body fever reaching 38°C. In the treatment not only should take medication according to medical advice, but also need comprehensive treatment, life also need to regular work and rest and eating habits, forbidden to eat spicy and stimulating, raw and cold food, diet is mostly light, less smoking, drinking, more vegetables, fruits.