The crocodile lizard (Shinisaurus crocodilurus) is an endangered relict species, and has been threatened by many factors. In addition to human hunting and habitat destruction, natural enemies are also one of their deadly threats. However, the current research on its predation by natural enemies is very scarce. This paper reported the phenomenon of Ahaetulla prasina preying on the crocodile lizard. We observed this preying behavior by full event recording method. The crocodile lizard probably faced a higher risk of being prey. Besides snakes, its natural enemies may also be animals such as birds. During the procedure of raising and breeding, we must pay attention to strengthen prevention measures to prevent the crocodile lizard from being invaded by natural enemies.