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去甲肾上腺素（NE）具有升压、加快心率的作用，但由于其加快心率的作用小于血压升高引起的心率反射性降低的作用，因此，NE导致患者心率下降的情况较为多见。石家庄市第三医院重症监护病房（ICU）收治1例应用小剂量NE引起快速心律失常的患者，且患者心率随着NE应用剂量增加而升高，应用多种抗心律失常药物治疗效果不佳，完善相关检查，排除电解质紊乱、甲状腺功能异常等导致心律失常的病因，发现随着NE泵入量的减少，心率随之下降，停用NE后患者恢复窦性心律。出院1个月后随访患者心律正常。故考虑该患者出现快速心律失常与NE相关。“,”Norepinephrine (NE) can raise blood pressure and speed up heart rate. However, because its effect of raising heart rate is less than that of reflex reduction of heart rate caused by the increase of blood pressure, NE causes more heart rate decrease in patients. A case of tachyarrhythmia caused by low dose NE was admitted to department of intensive care unit (ICU) of Shijiazhuang Third Hospital. The heart rate of the patient increased with the elevation of NE application dose. A variety of antiarrhythmic drugs was invalid. The related examination was prescribed to eliminate the cause of arrhythmia caused by the disorder of electrolysis and thyroid function, and found that heart rate decreased as the dose of NE tapered. After NE was stopped, the patient recovered sinus rhythm. During one month of follow-up, the patient's heart rhythm was normal. Therefore, the occurrence of tachyarrhythmia is related to NE.