This paper analyzaed the necessity quarantine pest risk analysis, introduced every step of PRA, and mainly compared qualitative and quantitative methods.

• 本文从检疫性有害生物入侵的途径及危害入手,分析了建立检疫性有害生物风险分析的必要性, 阐明了检疫性有害生物风险分析的各个步骤,着重比较了定性与定量风险分析的方法。