本文从沉积、地球化学的角度分析了羌塘盆地的油气生成特征。羌塘盆地的沉积及古地理环境控制了多层系生油岩的形成 ,但主要为三叠系和侏罗系以海相沉积为主的碳酸盐烃源岩和泥质烃源岩 ,厚度巨大 ,有机质丰度高 ,热演化程度较高 ,生烃潜力大 ,构成了羌塘盆地主力烃源岩。综合分析认为盆地南北坳陷连接处的鞍部为含油气远景最有利区 This paper analyzes the characteristics of hydrocarbon generation in the Qiangtang Basin from sedimentary and geochemical perspectives. Sedimentary and palaeogeographic environments in the Qiangtang Basin control the formation of multilayered source rocks, but are mainly composed of carbonate source rocks and muddy source rocks, which are mainly marine sediments in the Triassic and Jurassic. Huge thickness, high abundance of organic matter, high degree of thermal evolution, high hydrocarbon potential, constitute the main source rocks in the Qiangtang basin. The comprehensive analysis shows that the saddle of the junction between the North and South Depression in the basin is the most favorable area containing the hydrocarbon prospect