Aloe vera L.: Aloe vera L. is a perennial evergreen herb of Liliaceae, with tufted, large and thick leaves, which are seated or born at the top of the stem. Leaves are often lanceolate or short and wide, with sharp teeth at the edge. Inflorescence is umbrella-shaped, raceme-shaped, spike-shaped, cone-shaped, with red, yellow or red spots, six petals and six pistils. Perianth base is connected into a tube shape.

Aloe vera is native to tropical and arid regions of Africa, and is almost distributed all over the world. Wild aloe vera is distributed in India and Malaysia, the African continent and tropical regions. Aloe vera is cultivated in Fujian, Taiwan Province, Guangdong, Guangxi, Sichuan, Yunnan and other places in China, as well as in the wild. There are at least 300 wild species of aloe, including about 250 in Africa, about 40 in Madagascar, and the rest 10 are distributed in Arabia and other places.