Xizang sheep is an animal belonging to the sheep genus (Argali) of Bovidae, Sheep subfamily and Ovine subfamily. Grassland type Xizang sheep have strong physique. The head is rough and triangular in shape, with a raised nose bridge. Both male and female sheep have horns, with the horns of male sheep being thick and often extending in a spiral shape to both sides, while the horns of female sheep are flat and smaller, twisting and extending outward. Open chest, straight back and waist, well developed bones. Strong limbs and solid hooves. The body of Xizang sheep of Sanjiang type is rectangular. There are two types of ram horns, one is a large curve that bends backwards and forwards, and the other is twisted outwards. Most ewes have horns. The tail is conical, and the average length of a ram's tail is 12 centimeters. Most applications have black or brown patches on the head, neck, and tail.

Sheep are mammals of the family Auchenipteridae in the order Artiodactyla. Sheep originated in Central Asia and gradually expanded to various parts of the world. Gentle temperament, strong imitative and sociable, with the habit of following the leader sheep (usually old ewes) to gather in groups. Eating short grass, as well as coarse and hard straw and branches. Artificially raised animals can be fed with feed. Cold resistant, heat-resistant, generally prefers dryness and is afraid of moisture. Sexual cowardice, weak self-defense ability, and susceptibility to animal harm. Sheep wool is the main raw material for the wool textile industry. Leather sheets can be used as industrial raw materials and decorative items. The domestication of wild sheep into domestic animals began in the Neolithic Age about 11000 years ago.