Common snapping turtle（ Chelydra serpentina）is native to USA and Canada. It has the greatest latitudinal distribution of any turtle in North America. As the turtle has high edible value and ornamental value, it has been introduced to many countries as food or as a pet. Snapping turtles have escaped from mismanaged breeding facilities and been abandoned by owners, or released by believers, all of which have introduced snapping turtles into the natural environment in China. There is high risk of invasion if turtles are introduced into areas with suitable climate. To determine which regions have suitable climatic conditions in China, we used the maximum entropy model （Maxent） to predict the potential distribution areas around the world and we focused on China. The results showed that there were large potential distribution areas in Europe, China and Japan. In China, the middle and lower reaches of the Yangtze River Plain, Henan and Shaanxi province proved to be potential distribution areas. These areas should take effective measures to prevent the colonization of C. serpentina.