The paper makes the comprehensive study of the age of the passive continental margin, ophiolites, radiolaria silicalite of ocean basin facies, island arc magmatite and molasses formation of the Jinshajiang Orogenic Belt in Western Yunnan and Western Sichuan Provinces. In the light fossils and SHRIMP dating, it proves the Wilson cycle of the Jinshajiang Paleo-Tethys Ocean, namely, continental cracking (D 3),oceanic spreading(C),oceanic subduction(P) and collision orogency(T).Jinshajiang ocean is the important branch of ocean basin of multiisland ocean of Paleo-Tethys.