With the continuous development of urban underground space, the issue of basement anti-floating directly affects the safety and stability of buildings. This paper aims to explore the principles and applications of active anti-floating technical measures, providing theoretical and practical guidance for anti-floating design. By analyzing the technical characteristics of water drainage pressure limitation, water relief pressure reduction, and water isolation pressure control methods, combined with specific engineering cases, the practical application of anti-floating measures is elaborated such as water drainage pressure limitation and water relief pressure reduction in actual projects. It introduces in detail the anti-floating design ideas, schemes, and processes, and simultaneously proposes relevant requirements for the maintenance of anti-floating engineering. Research shows that in projects with self-draining conditions, adopting active anti-floating measures can effectively reduce the anti-floating water level, utilizing structural self-weight and overburden soil to resist buoyancy, with both economic and reliable benefits. Meanwhile, regular monitoring and maintenance are required to ensure the long-term operation of the system. In the future, the integration of Internet of Things (IOT) technology can achieve real-time early warning, further enhancing the safety of anti-floating engineering.