Abstract: Discovered several gneiss tonalite bodies on the southwestern margin of the Tarim basin have been reported in the paper.They are possessed of higher Si,Al,Na; enriched in LREE,LILE and Zr,Hf,Ti of HFSE,depleted HREE and P,Ni,Cr of HFSE,and possessed of A-type granite features in geochemistry.Zircon SHRIM PU-Pb dataing showed that there are three group age: the first group age is (1970±47) Ma (n=4,MSWD=2.4) which recorded succeeding zircon age of magma seizured; the second group age is (764±33) Ma (n=4,MSWD=2.50) which represented intruding age of gneiss granite; the third group age is (424±16) Ma (n=6,MSWD=1.03) which implied age of Caledonnian tectonic event.It may be provided a record of magma function brokenup Paleo-continent of Neo-Proterozoic in the Tarim Basin,it provides an important basis for the stratigraphic division in this district and an important information of the geological tectonic evolution.