库车盆地的沉积物表现出一些明显的特征。首先把库车盆地的沉积充填大致分为５个阶段，分析各阶段的沉积充填特征和岩相特征，得出对盆地的沉积特征的概括性认识。其次是分析了沉积物物源特征和各阶段的砂岩骨架矿物成分，阐述了砂岩的岩石学特征，并与已知构造背景的砂岩矿物组分进行对比，推测了库车盆地的原岩类型及盆地的性质。 Sediments in the Kuqa Basin show some distinct features. First of all, the sedimentary filling of the Kuqa Basin can be roughly divided into five stages. The sedimentary filling characteristics and lithofacies characteristics of each stage are analyzed to get a general understanding of the sedimentary characteristics of the basin. Secondly, the characteristics of sedimentary provenances and the mineral composition of sandstone skeletons in each stage are analyzed. The petrological characteristics of sandstone are explained. Compared with the sandstone mineral composition of known tectonic setting, The nature of the basin.