Two class, two order, nine subfamily, fifteen genera of nematode were isolated around sweet potato roots in Sichuan province of China. They were distributed in 23 counties. In them, Meloidogyne incognita, Pratylenchus spp.

• 经鉴定；四川甘薯根围线虫隶属于2个纲；2个目；9个亚科；15个属；其中以根结线虫Meloidogyne incognita、短体线虫Pratylenchus spp.