通过本次流行病学调查和实验研究，发现须恙螨主要分布于肾综合征出血热流行区，其地理分布与疫区的病例分布基本一致。主要传染源黑线姬鼠鼠体带螨指数为２５．１，从鼠肺抗原阳性鼠体所采集的须恙螨幼虫和小黑板采集经叮刺吸食已感染本病病毒的小白鼠乳鼠体液后的游离螨幼虫，分别分离到１株病毒，证明须恙螨具备传播媒介的先决条件。 Through this epidemiological investigation and experimental study, it was found that chigger mites are mainly distributed in the epidemic area of ​​hemorrhagic fever with renal syndrome, and its geographical distribution is basically consistent with the case distribution of the epidemic area. The main source of infection in the black line Apodemus agrarius with mite index was 25.1, collected from mouse lung antigen-positive mice chigger mite larvae and blackboard collected by stinging infected mice infected with the virus body fluids of mice After the free mite larvae were isolated from a virus, the need for chigger mites have the preconditions for transmission media.