The total length of the white-browed pit viper is about 1 meter and the largest is 1.5 kilograms. The head and neck of the white-browed pit viper are clearly distinguished, and the snout is short, wide and round. The small scales on the head and back of the white-browed pit viper are ribbed, and the nostrils are large, located at the upper end of the snout.

The back of the white-browed pit viper is brownish-gray with 3 vertical rows Large round spots, the center of each round spot is purple or dark brown, the outer circumference is black, and the outermost has irregular dark brown markings. The abdomen is grayish white, with large dark brown spots in some parts.