The surface mineral exploration information of uranium deposits in sedimentary basins is often weak and unidentifiable. To study the rapid, efficient, and economical method, we conducted large-scale and high-precision aerial gamma energy spectrometry measurements using an unmanned helicopter in the Gexi area of the Erlian Basin, Inner Mongolia. The distribution characteristics and enrichment patterns of radioactive elements like uranium, thorium and potassium were analyzed through data processing and interpretation. In this paper, we compare these findings with the tectonic and sedimentary characteristics to explore the relationships among the energy spectrum anomaly features, radon gas anomaly features, and known uranium mineralization features. The results show that airborne gamma spectrometry information serves as a reliable indicator of the distribution of sandstone-type uranium ore bodies. Furthermore, it also helps in determining the redox zoning and uranium mineralization in the sedimentary basin.