Abstract: The Longsushan magmatic activity belt is a uranium metallogenic belt characterized by typical alkali-metasomatite uranium. The large ore deposit is always closely related to alkali-metasomatism. The Jiling uranium deposit is attributed to Galedonian-Variscan magmatic hydrothermal fluids related to subduction. The Galedonian and Hercynian granites are respectively the products of northward and intracontinental subduction of Qilian ocean plate. According to the long-term field study and indoor comprehensive analysis (including microexamination, trace element and isotopic measurement), the characteristics of ore bearing rock and the genesis of the Jiling uranium deposit have been summarized in this paper.