方法：用分层随机抽样法确定调查点。 用尼龙袋集卵孵化法、顶管孵化法分别对人畜进行查病，用系统抽样结合环境抽样法开展螺情调查。

Methods: Using stratified sampling method to determine the survey places, The schistosomiasis in people and livestock were surveyed by the methods of nylon bag incubation and top - tube incubation.

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然后，利用模糊综合评价法对项目的风险进行综合评价，最后通过案例证明了该二次孵化项目风险评价体系和评价方法的正确性。

Using fuzzy evaluation, risk of project is fully evaluated; At last, using a case, the correction of the risk evaluation system and method of the secondary incubating project proved.

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