The oblique scale snake can reach a maximum size of 1.5m.

The oblong-scaled snake's head is oblong, distinct from the neck, and its snout is blunt and round; The eyes are large, with round pupils and large nostrils. The back is reddish-brown, black-brown or black-grey. Brown markings or black-grey markings on the back of the head, prominent arrow-shaped black markings or brown markings on the neck, pale or orange red on the lips and sides, yellowish-white or greyish white on the ventral surface, brown-black markings on the front, and dense black markings on the back .

The oblique scale snake lives in mountainous areas with higher altitudes, and is often active on mountain streams, roadsides, vegetable fields, and rock piles. Mainly prey on frogs.