Abstract: The basic and interpretation maps with a precision of 1×10^-5 m/s² and an area of nearly one million km² of the surveyed area are constructed for the east-central part of the Qinghai-Xizang Plateau. The results of research based on the gravity data include:the division of tectonic units; delineation of a number of faults; delimitation of giant buried and partly-buried magmatic belts; prediction of polymetallogenic zones and petroleum basins; examination of the major density boundaries in the basement and deposits; compilation of two burial depth diagrams of the density boundaries at the bases of the Mesozoic and Palaeozoic strata, respectively, and exploration of the crustal thickness and equilibrium.