At 0905 Am on January 7, 2025, a Mw7. 1 earthquake occurred in southern Tibetan Plateau, Dingri (Tingri) County, Rikaze (Xigaze) City, Xizang Autonomous Region, China. The epicenter was located at Cuoguo Town (28. 50°N, 87. 45°E), at a depth of 10 km. Field investigation after the earthquake shows that the 2025 Tingri event is a normal- faulting event with left- lateral strike- slip component. The Seismogenic fault is the Dingmu Co- Lagoi fault in the southern segment of the Xainza- Dinggye rift in southern Tibetan Plateau. This event produced ~35 km of discontinuous co- seismic surface ruptures along the eastern boundary of the Dingmu Co graben and the west border of the Lagoi Kangri Mountains. The generally NS- trending rupture zone developed along pre- existing fault scarps, and it is dominated by fresh, west- dipping normal fault scarps and tensional cracks. Locally, right- stepping, en- echelon scarps and cracks reveal horizontal strike- slip motion along the rupture. According to the size and continuity of ruptures, the co- seismic surface rupture zone can be divided into four segments from north to south: the Yangmudingcuomu, Nixia Co, Gurong, and Dingmu Co segment. Among them, the continous Nixia Co and Gurong segments are ~6 and ~3 km- long, respectively. The maximum co- seismic vertical and horizontal (left- lateral strike- slip) displacements measured along the rupture zone are 2. 7±0. 6 m and ~1. 1 m, respectively, both located along the Nixia Co segment, while those along the Gurong segment are ~0. 9 m and ~0. 4 m, respectively. The damage degree at different places is closely related to the hanging wall effects of the seismogenic fault and its distance from the surface ruptures. In addition, we infer that the regional stress changes caused by the Tingri earthquake may have triggered the activity along the Guojia fault and Ama Drime massif to the southeast. Therefore, the risk of strong earthquakes along Guojia and Dinggye faults may have increased, hence one should pay more attention to those regions.