Abstract: Jitang Group is composed of all kinds of tectonic slices with different sizes and ages along Taniantaweng - Leiwuqi - Jitang, whose original rocks may include sedimentary, volcanic and mid-acid intrusive rocks. According to published chronological literatures, the age of Jitang Group ranges from Paleozoic to Late Proterozoic because we have used different dating method, another more important reason is various definition of Jitang Group. Jitang Group might be a rock assemblage with distinct age and characteristics. The lithology,genesis and isotopic age are complicated .Therefore, it is necessary to disintegrate Jitang Group. A through understanding of Jitang Group is quite helpful to facilitate the geological research work in Eastern Tibet.