In order to implement the major decision on flood control and disaster reduction and help the high-quality development of mountain flood disaster prevention and control in Jiangxi province，this paper systematically reviews the history of mountain flood disaster prevention and control in Jiangxi province over the years，and deeply analyzes the evolution characteristics of mountain flood disaster prevention and control ideas.The mountain flood disaster prevention and control ideas have gradually developed from “fragmentation” to “systemization”，and the prevention and control goals have developed from being vague and scattered to being focused and clear.The prevention and control measures have developed from single means to diversification.On this basis，it evaluated the achievements of the construction of mountain flood disaster prevention projects over the years，and explored the development direction of mountain flood disaster from the aspects of government-led，multi-subject collaborative governance，in-depth exploration and diversified application of results，based on “four pre-plans”，digital empowerment transformation，strengthening operation and maintenance，and multi-measures to improve quality and efficiency.The research results have certain guiding significance for the ideas and practice of mountain flood disaster prevention and control.