Smart water conservancy construction is one of the Six Implementation Paths to promote the high-quality development of water conservancy in the new stage，and it is also a significant symbol of high-quality development of water conservancy in the new stage. The construction of digital twin watersheds is the core and key of smart water conservancy，and it is a complex system engineering. The construction of smart water conservancy in Jiangxi is still in initial stage. Although remarkable results have been achieved，there are still shortcomings such as weak data base，low level of algorithm intelligence，and saturated computing resources. Therefore，it is crucial for smart water conservancy construction of Jiangxi to clarify ideas，seize opportunities and meet challenges. This paper puts forward the main construction tasks including consolidating data basis，improving the level of algorithm intelligence，improving information infrastructure，promoting "2+N" intelligent applications，and building a network security system by sorting out the current situation and clarifying the current difficulties and the development goals of smart water conservancy in Jiangxi province during the 14th Five-Year period，which can provide constructive planning ideas for the future construction of smart water conservancy in Jiangxi province.