Echinococcosis granulosa is a disease caused by the larvae of Echinococcus granulosa in animals, also known as cystic echinococcosis. It is transmitted between humans and animals, with dogs as the final host and sheep and cattle as the intermediate hosts. Therefore, the disease is prevalent in livestock areas. Humans can also become the intermediate hosts due to ingestion of worm eggs, resulting in echinococcosis. Hydatid cysts are most common in the liver, followed by the lungs, and other organs such as the brain and bones are occasionally invaded. Currently, 21 provinces (cities and regions) have reported primary echinococcosis in humans and livestock, and infection with Echinococcus granulosa in domestic and pastoral dogs. The epidemic areas are mainly distributed in pastoral and agricultural areas in the west, north and northwest, with the most serious in Tibet, Qinghai, Sichuan, Xinjiang, Gansu, Ningxia, Inner Mongolia and Yunnan.