Abstract: As the most promising and feasible artificial influence cloud system, topographic clouds have been paid much attention by weather modification practitioners and researchers.In this paper, the historical process of field scientific experiments of topographic cloud catalytic precipitation enhancement at home and abroad were analyzed.The results obtained from the field scientific experiments are summarized.Several key scientific issues that need to be followed in the topographic cloud catalytic precipitation enhancement experiment are sorted out, including the analysis of the natural precipitation process of the topographic cloud, the distribution of supercooled water among the cloud in the topographic cloud system, and the evolution characteristics of the microphysical process of the mountain cloud system and its relationship with the mesoscale dynamic structure.The practice of carrying out topographic cloud field scientific experiments in Ningxia is introduced.The countermeasures and suggestions for accelerating the field scientific experiment of topographic cloud catalysis and improving the development and utilization of topographic cloud resources are put forward.It provides a way of thinking to solve the drought problem in the northwest region and promote the ecological environment protection and high-quality development of the Yellow River Basin.