The brown and black brocade snake is about 1.5 m long and weighs 0.5-1.5 kg.

The back of the brown-black brocade snake is brown-black and shiny, from the neck There are 22 to 28 narrow horizontal stripes about 1 to 2 scales wide from the head to the tail, and the front and rear horizontal spots are separated by 8 to 12 scales. The ventral surface is gray and white with obvious Dark spots. The dorsal scales are 23-23-19 rows, only the outermost row is smooth, and the rest have strong edges. The ventral scales are 203-224, the anal scales are divided into two, and the lower caudal scales are 54-76 pairs.