Fast infusion of aminophylline may cause patients to develop serious reactions that can cause dizziness, palpitations, arrhythmia, and even sudden drop in blood pressure, delirium, muscle tremors or convulsions. The effective therapeutic window of aminophylline is relatively narrow, easy to overdose poisoning, early common nausea, vomiting, agitation, insomnia, etc., when the blood concentration of the drug is further increased can appear tachycardia, arrhythmia, severe cases can occur fever, convulsions and other symptoms, and even respiratory arrest. Aminophylline infusion fast, can lead to blood concentration is too high and thus produce adverse reactions. It is recommended to follow the doctor’s instructions for the correct use of medication, if there are adverse reactions, should be promptly discontinued under the guidance of the doctor to deal with.