Studying on the new complied 1∶100 million magnetic and gravity map, writers find there are a group of northwest directional structures in Yanshiping—Chamdo area, eastern Xizang(Tibet), which are intersecting with the nearly east—west directional structures developed in the central—western Xizang(Tibet), rather than connecting with them. This view is different from common realization in geology field that the structures in Xizang(Tibet) mainly appear NW—EW—NWW direction lying down like “S”. Based on the new findings, furthermore, writers have achieved some new understandings about the tectonic framework in eastern Xizang area. In this paper, writers clearly show the gravity and magnetic characteristics of the northwest directional structures and nearly east—west directional structures, and infer that the northwest directional structures could be split from the Eastern Kunlun fault, Qilian—East Kunlun Mountains, while the previous view that the northwest directional structures connect with nearly east—west directional structures reflects the overlying epitectonic caused by India plate shoving to the north after Jurassic. This discovery has very important significances for the understanding of the tectonic framework of Xizang(Tibet).