The giant snake-necked turtle is a carnivore, eating mainly snails, aquatic insects, fish and amphibians, as well as the stems and leaves of plants. Giant snake-necked turtles are carnivores in the wild, but they also eat some plant-based feeds in captivity, so you can choose some when feeding Turtle food and meat, and then selectively add some vegetables and fruits, and at the same time ensure the health of the water quality.

Giant snake-necked turtles can live on land and in water, prey by ambush or sneaking close to launch a surprise attack. When preying, they rely on contracted neck muscles to put their heads on the ground. The giant snake-necked turtle's neck is more than twice as long as that of an ordinary turtle, so it is relatively easier to prey. In addition, giant snake-necked turtles eat large numbers of mosquito larvae, making them very useful animals for humans.