Tibet is rich in water resources. Fish evolution is closely related to the uplift of the Qinghai-Tibet Plateau and the evolution of natural environment isolation. Fish parasite fauna closely related to fish and water environment has also gradually attracted attention. Preliminary studies have shown that although the species of fish in Tibet are single, there are many species of parasitic worms in the digestive tract of fish, showing a high diversity. Some species of Clonorchis and Echinococcus endemic to schizophrenia, as well as some species of threadworms and tapeworms with birds as their final hosts have been found. The composition and evolution of fish parasite fauna in Tibet may be affected by the unique releasing habits and migratory bird migration, the construction of hydropower projects and the status of water pollution, as well as the decline of indigenous fish resources and climate change in the Qinghai-Tibet Plateau. The investigation of parasite fauna can provide detailed data for the species, distribution and quantity of fish parasites in this area, further understand the formation and evolution process of parasites, clarify the relationship between environment and parasite diversity, and provide scientific basis for the development and utilization of fishery resources in Tibet. In this paper, the above problems are summarized and discussed.