慢性苯中毒的早期诊断有着重要的意义。早期诊断正确,及时给予适当治疗,其预后是良好的。反之如果一旦造成造血系统的损害,不但增加了治疗上的困难,而且也使预后不良。但是慢性苯中毒的早期诊断却是一个困难的问题。虽然大家都认为血象的变化可以作为早期诊断的依据,但是慢性苯中毒的血象却是非常复杂而且缺乏同一的规律,与早期症状之间更没有密切一致的关 The early diagnosis of chronic benzene poisoning is of great significance. Early diagnosis is correct, timely and appropriate treatment, the prognosis is good. Conversely, if the damage caused by the hematopoietic system, not only increased the treatment of difficulties, but also make the prognosis is poor. However, the early diagnosis of chronic benzene poisoning is a difficult problem. Although we all think that changes in blood can be used as a basis for early diagnosis, but the blood of chronic benzene poisoning is very complicated and the lack of the same rules, and there is no close and early symptoms between the close