The investigation of plant diversity in high altitude areas of the QinghaiTibet Plateau is insufficient. When we conducted plant diversity survey in Anjiu_La Shan Pass, Ranwu Town, Baxoi Country, Xizang. We found a parasitic plant. After consulting the literatures and checking the typus specimens, we finally identified it as Mannagettaea hummelii H. Smith (Orobanchaceae). Mannagettaea is distributed in China (Gansu, Qinghai, Sichuan) and Russia (Sayanling region). The genus is a new distribution record to Xizang, and the result enriched the flora of Xizang. Meanwhile, it also raised the altitude up to 4 459 m. The voucher specimens are kept in the Herbarium of Kunming Institute of Botany (KUN).