The total length of the Ussuri pit viper 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.

The body color of Ussuri pit vips varies greatly, the back is dark brown, dark gray, tan, earth brown, earth yellow, brown green or brown red, and there are 2 rows of light-colored central ones from the neck to the tail Dark round spots or reticulations formed by such spots, or inconspicuous spots, tail color same as body color.

The ventral face of Ussuri pit viper is light-colored, the jaw is gray and white; the ventral surface is black The bright ones (dark gray on the back) have 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.