The general length of the grass snake is 120 cm, and the longest can be 200 cm. The head and back of the grass snake are olive green, with a pair of large bright orange-red or orange-yellow spots on both sides of the occiput, the lips are stained white, and the scale grooves are black.The head and belly are yellowish white.

The trunk and the back of the tail of the grass snake are olive green, and the ventral surface is grayish white. Almost every ventral scale has 1-4 thick, slightly triangular scales. Black spots, some scattered with black spots.