The lithosphere of Tarim Basin and Qinghai-Xizang(Tibet)Plateau converges along Kongga Fault beltand it is inferred that the Tarim lithosphere is subd ucting southward，nevertheless Tibet lithosphere remains itsadvancing northward also；there is a low velocity abnormality of S wave located at the depth of 200 km beneathTianshuihai Terrain on the north of Kongga Fault ，which indicate the passage of aesthenosphere and mantlematerials formed by large deformation below Kunlun Terrain of multiple folded Orogenic movement，so that itmay induce partial melting．An obvious LVZ reaching to upper mantle might exist beneath Yecheng at the southedge of Tarim Basin，which is presumed as deep fault concealed beneath south of Tarim． In addition，theconversion interface between woltitanium phase and magnesiowustite phase could appear at the depth from 670to 700 km ．