Abstract: The regional geological and mineral prospective survey project of 1∶50 000 in southern Beitinggong of Gaize County, Tibet has achieved main achievements as follows: ① A new stratigraphic unit, the Upper Triassic Galanong Formation, was identified, and the Upper Jurassic Karinuo Formation was redefined according to evidences of paleontological fossils. ② The U-Pb age of zircons from the diorite was (120±0.7) Ma, and the age from Lower Cretaceous Meiriqiecuo Formation was (121.9±1.6) Ma, which suggested that the Early Cretaceous was the most important period of volcanic activities in the survey area, and the volcanic activities were quite close with the subduction of Bangongco-Nujiang ocean.