5－Fu（5-氟尿嘧啶）是一种常见的抗肿瘤药物，在治疗剂量下，其副作用主要为：胃肠道不适、脱发、膀胱出血、血曰细胞下降等等[1]。超大剂量作用下人体反应情况不太清楚，到目前为止,国外只发生1例因超大剂量5-Fu作用而死亡的病例，但未见详细的尸检报告．我国尚未见到这种病 5-Fu (5-fluorouracil) is a common anti-tumor drug. Under the therapeutic dose, the main side effects are: gastrointestinal discomfort, hair loss, bladder hemorrhage, blood cell drop, etc. [1]. The response of human body under ultra-dose is not very clear. So far, only 1 case of death due to the effect of ultra-dose 5-Fu has occurred in foreign countries, but no detailed autopsy report has been reported. China has not yet seen this disease