Abstract  [Aim]  To describe members of the Tachinidae (Insecta: Diptera) found in the Qilian Mountains National Park (QLM) and clarify the distribution pattern of this family in this region. [Methods]  Specimens were collected using net catching between 2019 and 2021 and classified using comparative morphological methods. [Results]  A total of 109 species from 54 genera, 15 tribes and 4 subfamilies were identified, including one newly recorded genus for China; Masistylum Brauer & Bergenstamm, 1893, and two newly recorded species for China, Masistylum arcuatum (Mik, 1864) and Onychogonia flaviceps (Zetterstedt, 1838). A total of 54 of the species identified were new records for Qinghai Province. Seven species were dominant in the area. The faunal distribution pattern shows that common Palaearctic and Oriental species were more abundant than endemic species in the Palaearctic region. [Conclusion]  Species of the Tachinidae are abundant in the Qinghai District of Qilian Mountain National Park. Dominant species that parasitize herbivorous Lepidopteran larvae are the most obvious. The faunal distribution pattern is basically consistent with the species composition characteristics of the Qinghai-Tibet Plateau region, which is part of the Palaearctic region.