The phylogenetic relationships of 5 species of snappers (Lutjanus stellatus, L.sebae,L.vitta, L.fulvus and L.fulviflamma) were studied comparatively, which were based on 2 methods: restriction fragment length polymorphism of mitchondrial DNA (mtDNA-RFLP), RFLP of cytochrome b (Cyt b) gene segment(>900bp) amplified by polymerase chain reaction(PCR-RFLP). The sample numbers of Lutjanus stellatus, L.sebae, L.vitta, L.fulvus and L.fulviflamma were 17,17,35,17 and 17, respectively, which are collected in the Sou...