To deal with the increasingly serious water resources problems，the strictest water resources management system was proposed by our government，and it has been implemented throughout the country up to now as a new move to intensify water resources management. However, there are some problems concerned. Based on the preliminary studies,some problems discussed and thought in the preliminary times were presented,some related issues were further rethought，and some thinkings for several major issues of the strictest water resources management system were stated，including the concept of the strictest wader resources management system，the relationship with river harnessing of human-water harmony，the relations with ecological civilization construction，the relations with deepening of water conservancy reform, key issues for system implementation and evaluation, theory system problems，support system issues,et al. It can provide a reference for further scientific understanding and improving the implementation of the strictest wader management system.