The total length of the soil ball is 172-676 mm. The head is triangular, not wide and flat, the neck is obvious, the body is small and the tail is short. Body color varies greatly, with dark brown, dark gray, tan, khaki, khaki, brown-green or brown-red on the back, with 2 rows of dark round spots with light central color from neck to tail or a network formed by these spots Stripes, or stripes are not obvious, the tail color is the same as the body color.

The belly of the soil ball is light-colored, the jaws are gray and white; the ventral surface is black and shiny (dark gray on the back), there are black spots on the ventral side of the jaws and scales of the lower lip, and the jaws are also grayish white. Behind the eyes, there is a dark wide-banded spot at the corner of the mouth, and there is a striking thin white edge on the back edge, which is the so-called white eyebrow.