笔者结合教学与科研实践 ,从影响药物作用的因素谈谈鱼病防治中的合理用药 ,供渔业生产参考。一、影响药物作用的因素药物作用是药物与动物机体间相互作用的综合性表现 ,在用药过程中会遇到来自药物、机体、用药方法、环境等诸方面因素的影响。（一）鱼体方面的因素１．种属差 The author combines teaching and research practice, from the factors that affect the role of drugs to talk about the rational use of fish disease prevention and control for the fishery production reference. First, the factors that affect the role of drugs The role of drugs is a comprehensive manifestation of the interaction between drugs and animal body, in the course of medication will encounter from the drug, body, medication, environmental factors and other factors. (A) the aspects of the fish body 1. Species is poor