Abstract: Water conservancy projects are an integral part of economic development. With the rapid development of society, higher requirements are put forward for the quality of water conservancy projects. With the development of water conservancy engineering technology, more and more related technologies play an important role in water conservancy engineering. In order to ensure the smooth operation of water conservancy projects, science and technology must be combined. The anti-leakage construction of water conservancy projects is an important link. If there is water seepage, there will be certain shortcomings in the use of the project, and it will even threaten the safety of life and property. Therefore, in the construction of water conservancy projects, it is necessary to strengthen the application of anti-seepage technology. This article mainly analyzes the application methods of anti-leakage technology in water conservancy projects, hoping to provide some reference for related personnel.