Tugong snake can weigh up to 10kg.

Tugong snake is 60-70 cm long, with a slightly long triangular head, gray-brown to brown back, and a dark ∧-shaped spot on the back of the head, mixed with black spots. There are large symmetrical scales on the back of the head, cheek sockets in front of the eyes, and two longitudinal round spots on the back of the body.

The color of the body changes greatly, and the head and body back from gray-brown to the soil Red, the head has a black band from the back of the eyes to the corner of the mouth, and there is a yellow-white fine line on the upper edge; the back of the body is interactively arranged with black and brown round spots; the ventral surface is gray-white to gray-black brown, with irregular black spots; the tip of the tail is black.