The head of the red-spotted snake is broad, flat and triangular, and its body color is mainly reddish brown. The red-spotted snake has many black horizontal spots arranged in various sizes, from the neck to the end of the tail. If viewed from the side of the body, the black horizontal spots will not extend to the junction of the body and abdomen, but only halfway to the side of the body. However, some red-spotted snakes have a darker reddish-brown color, and when combined with the original black horizontal spots, the body color will be darker. The belly of the red-spotted snake is white.

Actually, the red-spotted snake can be up to 160 cm in length, but the red-spotted snakes commonly encountered All are about 1 meter.