Blind hook snakes are small in size, the largest African giant blind snake can reach 750 mm, and the total length of general species is less than 200 mm. Because blind hook snakes like to live in burrows, and they are small and good at digging, they are often confused with earthworms. In fact, the only difference between the blind snake and the earthworm is that the body of the blind snake is not divided into obvious segments.

Blind SnakeThe snout is slightly flattened. The eyes are hidden under the eye scales, and the mouth is small and located on the ventral surface of the head. The maxilla is horizontal, loosely connected to the skull, and has a few teeth on it. The premaxilla, palatine and pterygoid are toothless, and a few species of mandibular teeth still have one tooth at the front. The vertebrae have pedicles and concave vertebrae. There are remnants of the girdle, or only a rod-shaped bone, or completely degenerated and disappeared.