本文对Ｓａｕｎｄｅｒｓ的悬浮离心回收线虫法进行了改进研究。保留第１次离心后上清液中含有的线虫，结果使小卷蛾线虫的平均回收率由３２．２％上升到６０．２％；离心处理对线虫的存活率及其对害虫的侵染率没有显著影响，但鞘的保持率有所降低。用浓度为２００ｇ／Ｌ盐液替代了浓度为４５４ｇ／Ｌ的糖液，对线虫回收率无影响，但成本可以降低 In this paper, Saunders’ suspension centrifuge recovery nematode method was improved. The retention of the nematodes contained in the supernatant after the first centrifugation resulted in an increase of the average recoveries of C. elegans from 32.2% to 60.2%. The survival rate of nematodes by centrifugation and their infestation with pests The rate did not have a significant effect, but the sheath retention rate decreased. With the concentration of 200g / L salt solution instead of the concentration of 454g / L of sugar solution, no effect on nematode recovery, but the cost can be reduced