Eclogite, a volumetrically minor component within orogenic belts, witnessed the geodynamic evolution of subduction, collision, and exhumation. Petrographic observations suggested that the eclogite in the Bashiwake area, South Altyn Tagh, experienced at least three metamorphic stages, including the eclogite- facies metamorphism (M1) (946~1026℃, 2. 9~3. 2 GPa), the early retrograde stage (M2) characterized by an intergrowth of clinopyroxene with albite after omphacite， and the later retrograde stage (M3) represented by the occurrence of kelyphitic rims of amphibole and plagioclase around garnet (~0. 8 GPa, 789~841℃). Zircon U- Pb dating yielded the metamorphic age at 492. 8±2. 8 Ma, representing the eclogite- facies stage based on geochronological data and the inclusions of garnet, omphacite, rutile, and quartz in zircon grains. These results suggest a clockwise P- T- t path for the eclogite in the Bashiwake area, South Altyn Tagh. The P- T conditions of eclogite provide the mineralogical and petrological evidences for the issue of the South Altyn experienced the ultrahigh pressure metamorphism and the dynamic evolution process of South Altyn Tagh.