The detrital heavy minerals are relatively stable and contain important genetic information. The EPMA composition analysis of them can provide the provenance and basin tectonic setting. The first member of Shoush-angou Formation is mainly composed of sandstone and conglomerate,and the second member is mainly composed of siltstone and mudstone. The assemblages of heavy minerals in the sandstones are mainly composed of zircon, spinel and garnet, suggesting that the provenance rocks were magmatic and metamorphic rocks. The results of electron probe microanalysis show that tourmalines were derived mainly from lithium-poor granite and metasedimentary rocks, spinels were sourced from island arc basalts and mid ocean ridge basalts, and garnets from the source of high-grade metabasic rocks. Comprehensive provenance analysis shows that they were mainly derived from Diyanmiao ophiolite,Xilinhot complex and basalts of Benbatu Formation. Combined with regional geological correlation, the sediments of Shoushangou Formation were formed in a backarc basin, suggesting that the Paleo-Asian Ocean was not closed in the Early Permian.