The king cobra is a large snake.

The shape of the king cobra is similar to the general cobra, and it is the largest size in the world The longest venomous snake species, its head is oval, the body color is mainly dark brown or jet black, the nape has a ∧-shaped yellow-white markings, no spectacled spots; the trunk and the back of the tail have narrow White stripes with black borders. The mandible is khaki, and the ventral surface is gray-brown with black linear markings. The markings of juvenile snakes are different from those of adults, mainly yellow and white stripes on the back of the snout and in front of the eyes, and black body with more than 35 light yellow or white stripes.