The head of the green bamboo snake is large and triangular; the neck is thin; the tail is short and winding; the maxilla has hollow teeth, buccal fossa, and venom glands. The maximum total length of males is 77 cm, the average total length is 5.1 times the length of the tail, and the maximum total length of females is 98.1 cm.

The back of the green bamboo snake is green, the upper lip is slightly lighter, and the back and tip of the tail are burnt red; The head and tail are yellowish white. The eyes are orange-red, and the body has a vertical line of white, light yellow or half red and white. The juvenile snake's stain is basically similar to that of the adult, but there are two lines of white spots on the back of the body.