The Tibetan people living on the Qinghai-Tibet Plateau have created a splendid nomadic culture with their unique lifestyle and hardworking wisdom. Among them, the black tent making technique is one of the original ecological civilizations they created. The black tent has a long history. According to the ancient Tibetan documents in the Dunhuang Grottoes, in the middle of the third century AD, the Tibetans began to use yak hair to twist into threads and began to weave wool sheets to make simple houses that could shelter from wind and rain, which was the prototype of the tent. The shape of the tent contains the rich outlook on life, the universe and religious culture of the Tibetan people. The black tent is made of cow hair and yak wool. Yaks are called "the boat of the plateau". Their hair is soft and has strong elasticity. It is very warm and suitable for making tents. The tent making process includes selecting wool, tearing wool, twisting yarn, weaving sheets, sewing tents and setting up tents. The herders mainly choose black cow hair as raw material and fluff as base material. They twist cow hair and fluff into weaving thread and bottom thread respectively, and then use a weaving machine to weave long cow hair brown. The width of the brown cloth is about one foot, and the length is determined by the span of the front and back diameter of the tent. Tents made in this way and with this material play an important role in the production and life of the Tibetan people. They are not only durable, warm in winter and cool in summer, and easy to carry, but also a practical embodiment of the concept of green environmental protection, and also show the hardworking and simple Tibetan people's strong awareness of environmental protection and courtesy to the natural environment.