Infusions in children are generally harmless when the indications are mastered. In special cases, allergic reactions to drugs, infusion reactions, phlebitis, drug resistance or secondary infections may occur. Infusion is an effective way of drug delivery, applicable to a wide range, grasp the indications are generally not harmful to children. Due to the different physique, under special circumstances, children may have drug allergic reaction after infusion, manifested as skin rash, neurovascular edema, etc.; there may also be infusion reaction, manifested as chills, chills, cyanosis of the face and limbs, followed by fever; part of the drug through the venous input may also cause phlebitis. Inappropriate infusion methods or long-term infusion may also cause drug resistance or secondary infection. Infusion is favored because of its quick effect and short treatment course, but it is necessary to strictly grasp the indications and follow the doctor’s instructions.