Infusion reactions are usually caused by the presence of impurities in the infused fluid, allergens, pyrogens or the fast infusion rate. Infusion reactions usually result in chills and fever, and in the most severe cases, high fever, usually with a body temperature of 39 degrees or higher. If the central nervous system is affected, coma and convulsions may occur, and in severe cases, anaphylactic shock and even central respiratory depression may occur, leading to life-threatening conditions. In this case, the infusion must be changed immediately, the vital signs should be closely observed, and if shock occurs, two intravenous channels, rapid rehydration or application of anti-shock medication should be given immediately. If respiratory distress and central respiratory depression occur, tracheal intubation and ventilator-assisted breathing must be done.