The adult pink chain snake is about 1 meter in length. It is a species unique to China. It lives near the water in the foothills and plains, and is more active at dusk or at night. Eating frogs and other snakes.

The head of the pink snake is wide and flat, the head and neck are clearly demarcated, and the snout is rounded And wide, with round pupils. There are 8 (2-3-3 or 3-2-3) upper lip scales, 1 preorbital scale, 2 retroorbital scales, and 2+3 or 2 temporal scales. The dorsal scales have 19-19-17 or 15 rows, the central 3-9 rows are ribbed, the ridge scales are slightly larger, the abdominal scales are 221-234, the anal scale is 1, and the lower caudal scales are 80-92 pairs. The back is dark brown, with (28-35) + (12-13) pink horizontal spots, with a width of 1-1.5 scales. Both ends of the transverse spots bifurcate on the side of the body and extend to the ventral scales, and the bifurcation and ventral surface are gray-white with scattered black-brown spots. There is still a pink arc-shaped spot on the back of the head.