Deep-water sedimentary system is the frontier field of oil and gas exploration and research in the world. Submarine fan lobe is an important reservoir of deep-water sedimentary system. At present, the research on the lithofacies characteristics and identification methods of lobe under the influence of bottom flow is still insufficient. The Rovuma basin is located on the passive continental margin of East Africa. Gravity flow deposits are widely developed in the basin. Affected by the northward Antarctic bottom flow, the gravity flow sand bodies in Rovuma basin are mostly reformed by the bottom flow. This paper takes the bottom flow-reformed lobes in Rovuma basin as the research object, comprehensive core and logging data to carry out lithofacies characteristics identification and quantitative interpretation. The results shows that: (1) The lithofacies of the lobe in the study area can be divided into sand-rich type and mud-rich type, according to the grain size and sedimentary structure, it can be further divided into seven subcategories: gravel-bearing coarse sandstone facies, medium-coarse sandstone facies, medium-fine sandstone facies, fine sandstone facies, argillaceous unequal-grain sandstone facies, argillaceous siltstone facies and mudstone facies. (2) The bottom flow has a strong effect on the reformation of fine sandstone facies, and bedding structures are generally developed, while the bottom flow effect on the coarse-grained lithofacies is weak, and the whole is a massive structure, and a small amount of bedding structure can be formed by the local strong bottom flow. (3) Using the method of multi-parameter intersection and identification of logging, the lithofacies logging interpretation model was established, with an accuracy of over 84%. (4) The lithofacies combination of thick sand and thin mud is developed at the proximal lobe, and the lithofacies combination of sand and mud interbedded at the lobe margin. The research in this paper can lay a foundation for the fine prediction of subsequent lobe reservoirs.