Turtles with different morphology occupy a wide range of habitats from aquatic to highly terrestrial, making them an ideal species group for ecomorphological study. Current studies indicate that niche divergence, including dietary and habitat shift, may be correlated with morphological differences of turtles. This review outlines the research progress on the ecomorphology of turtles, with the focus on the definitions, the relationships between ecomorphological characteristics (body size and morphology of shell, head, limbs and tail), feeding habits and habitat use. Meanwhile, the comparative analysis of phylogenetic systematics and ecomorphology of turtles was addressed in this paper. In addition, current issues in ecomorphological research were pointed out and some suggestions for the further work were made.