The Yidun Terrane, located in the eastern Tibetan Plateau, is a key area to study the tectonic evolution of the Tibetan Plateau and the Paleo- Tethys. To date, its paleogeographic position and possible tectonic evolution during the early Paleozoic remain unclear. Detrital zircons from siliciclastic rocks record a wealth of information about their source region and have been widely used to unravel sedimentary provenance and paleogeographic construction. In this study, we conducted detrital zircon in- situ U- Pb dating and Hf isotope analysis of three lower Paleozoic meta- sedimentary rocks in the terrane. The results show that these samples have multi- peak detrital zircon age patterns, their U- Pb ages are mainly grouped into ca.2535~2350 Ma, ca.1000~900 Ma, ca.890~750 Ma, and ca.590~520 Ma, and their corresponding εHf(t) values are 8.8 to 13.1, 11.8 to 10.0, 20.1 to 12.6, and 27.6 to 6.1, respectively. Combining these results with previous studies, we consider that the ca.2535~2350 Ma and ca.890~750 Ma detrital zircons were predominantly sourced from the nearby Songpan- Ganze Terrane and South China Block, whereas the ca.1000~900 Ma and ca.590~520 Ma detrital zircons were likely derived from the Rayner- Eastern Ghats, Prydz- Darling, and Kuunga orogens in the East Gondwana. By comparing the difference in sedimentary provenance between the lower Paleozoic and Neoproterozoic siliciclastic rocks in the Yidun Terrane, as well as those lower Paleozoic sedimentary rocks in the nearby terranes, we suggest that the Yidun Terrane was probably collaged to the India Block during late Ediacaran to early Cambrian (ca.570~520), and became part of the Gondwana supercontinent. In the early Paleozoic, the Yidun Terrane was located on the northern margin of the East Gondwana, adjacent to the Qiangtang and Tethyan Himalaya terranes.