The study of internal-wave and internal-tide deposits is a very young research field with twenty years of history in the deep-water deposition, and there is no study on its sedimentary types. Here, we forcus on the internal-wave and internal-tide deposits developed in Xujiajuan Formation, Xiangshan Group, Ningxia Autonomous Region and describe related sedimentary structures in detail. We interpret combined-flow-ripple lamination and the cross beddings with undulatory laminations, offshooting laminations and cross-laminated lenses as combined-flow and oscillatory flow generated by short-period internal waves respectively. According to these new interpretations and the interpretations of deep-water bidirectional cross-beddings and unidirectional crossbeddings in literatures, we attribute internal-wave and internal-tide deposits to short-period internal-wave deposits, internal-tide deposits and interaction internal-wave deposits. Here, we use internal-wave and internal-tide deposits instead of internal-wave deposits because of the special origin and research status of internal tides.