Abstract: To assess the interspecific relationships in China of celery(Apium gra-veolens L.). The genetic diversity of 24 celery accessions resources were analyzed by AFLP. Results showed that 245(59.88%) polymorphic sites were detected among the total 395 sites amplified by 8 screened selective primers (among 81 primers). The AFLP-based genetic similarity ranged from 0.385 to 0.987, UPGMA cluster analysis showed that the tested materials could be divided into ternary groups at the level of genetic similarity 0.600, At present, the relationship of the cultivated varieties are very closely in celery, The clusters were greatly associated with the origins and the morphologic characters of the tested germ plasm. Dendrogram obtained using molecular markers is homologous with separated morphologic character in some degree.