Abstract: Several superhigh arch dams have been built or are under construction in China. These projects are often located in special service environments with high water head, high slope and complex geological conditions. Their technical indicators have broken through the applicable scope of current codes and previous engineering cognition, including design, construction, safety monitoring, etc. Compared with ordinary arch dams, the engineering complexity of superhigh arch dams increases sharply with the dam height, and the structural mechanical behavior has more unique characteristics, leading to stringent requirements of safety control during construction and operation. The key technologies of structural behavior diagnosis of superhigh arch dams have been explored systematically, such as engineering empirical evaluation parameters, geomechanical model tests, numerical simulation analysis. Furthermore, safety control technologies have been deeply investigated, including construction quality control, temperature control and crack prevention, monitoring feedback analysis. On this basis, hot issues of health diagnosis and safety control of superhigh arch dams during future long-term operation are expounded, including the mining of methods of space-time evolution characteristics, real-time diagnosis model of operation risk probability, dynamic control model of structural safety, intelligent perception and early warning technology. The aforementioned research aspects are critical for improving the future intelligent construction and management of superhigh arch dams.