Aweto is a kind of worm in winter, while it turns into a kind of grass in summer months.

Aweto is composed of a larva and sporophore growing on the top of its head. The larva is 3-5 cm long, 0.3-0.8 cm thick with yellowish brown and coarse surface, have segments with several annular marks and eight pairs of feet present at the abdomen with the middle fourpairs more prominent. and the organism is brittle.

The sporophore is slender, longer than the larva, deep brown, with longitudinal striae, and its top is elliptical, enlarged, with numerous protruding granular peritheciums, and soft and tough in texture.

Aweto is sweet in taste, warm in nature, and attributive to lung and kidney channels.

Aweto is rich in various microelements, lukewarm in nature and sweet. It helps invigorate lung, liver and kidney functions, supplements essence, improves inspiration to relieve dyspnea, eliminates phlegm, and stops bleeding. Aweto is a good tonic, and an ideal remedy for treating a long-time cough and weakness, asthma, sputum with blood, aching knees and waist, as well as impotence.

As a tonic, it also has a great potential of preventing and fightingt cancer and promoting the immune system. It is sometimes used as a tonics for aging.

Aweto is mainly produced on the Qinghai-Tibet Plateau, including Qinghai, Tibet, Gansu, Yunnan and Sichuan. It is a very precious Chinese traditional medicinal plant, and also a unique life form of both animal- and plant-like conformation. As early as the Ming Dynasty (1368-1644), it enjoyed a world-class reputation and was exported to neighboring countries such as Japan and Southeast Asian countries. It is renowned as China's legendary treasure. At present, Aweto has great demand in Southeast Asia, Japan, the United States Hong Kong, and Macao.