Abstract: Dam safety monitoring system is an important technical guarantee for dam construction and operation. With the gradual application of the new generation of information technology, the construction of dam safety monitoring system is moving forward from informatization to intelligence. Based on the research and application of Hekou village reservoir dam safety monitoring system, the key technologies such as perception layer construction, data transmission, data application and display are introduced. According to the requirements of intelligent water conservancy construction and combined with engineering examples, the idea of intelligent improvement of dam safety monitoring system is put forward from the aspects of comprehensive perception and application of advanced technology. The research results can provide reference for the construction of safety monitoring system for intelligent water conservancy in the future.