During Paleo- and Mesoroterozoic epochs, three sets of low metamorphism sedimentary and volcanic successions represented by the Hekou Gr., Dahongshan Gr., Dongchuan Gr., Kunyang Gr. And Huili Gr. were developed within the southwestern margin of upper Yangtze block. Previous studies of petrology, geochemistry and geochronology show its tectonic framework and evolution history. Four SHRIMP U-Pb ages of magmatic zircons from the volcanic rocks hosted in the Paleo- and Mesoproterozoic strata were yielded: 1800～1600Ma, 1600～1300Ma, 1300～1100Ma and 1100～1000Ma. Along with sedimentary facies, major, trace and rare earth elements chemical data indicate that the southwestern margin of the upper Yangtze block experienced four development stages during Paleo- and Mesoproterozoic. At ca. 1800～1600 Ma, a near EW-trending rift basin was developed within the Dahongshan, Hekou, and Dongchuan areas. At ca. 1600～1300Ma, the Dongchuan area was in a passive continental extensional setting. At ca. 1300～1100Ma, the Caiziyuan-Matang areas were the intraplate rift-oceanic basin while the Laowushan area was a rifting basin. At ca.1100～1100Ma, the Caiziyuan-Matang rift- ceanic basin subducted northward or both northward and southward to form volcanic arc in Tianbaoshan and Fulingpen areas. Meanwhile, orogensis- or collision-type granite was formed in the western margin of the Yangtze at ca. 1.0Ga (1007±14～1014±8 Ma). All this evidence indicates that Sichuan and Yunnan had jointed together, which, along with the whole upper Yangtze block, formed the Rodinia supercontinent.