Abstract: The samples of root-knot nematodes were collected fran 3 gardening plants in Guangzhou andDongguan cities in Guangdong province. The specimens collected were identified according to the mainmorphological characteristics observed under LM (light microscope) and SEM(scanning electron microscope). The results demonstrated that the pathogen in Lantana camara L. was Meloidogyne arenariaChitwood, 1949; the pathogen of Euphorbia cochinchensis Lour. was either M. javanica(Treub, 1885)Chitwood, 1949 or M. incognita (Kofrid and White, 1919) Chitwood, 1949, and the pathogens ofColeus pumilus Blanco were M. javanica (Treub, 1885) Chitwood, 1949 and M. incognita (Koforid andWhite, 1919) Chitwood, 1949.