Abstract:With the continuous development and application of big data technology, the development and progress of relevant industries have been greatly promoted. However, the most practitioners in the field of water conservancy engineering are still relatively unfamiliar with the big data technology, especially unfamiliar with the operation principle and application status of the water conservancy engineering supervision system based on big data technology. Through a great deal of investigation, on the basis of sorting out the concepts of big data and water conservancy big data, the construction and application of the big data supervision system framework in water conservancy engineering are discussed and analyzed. It is found that the application of big data technology in water conservancy engineering also tends to be macro-framed or is focused on the individual requirements in order to provide some reference for the water conservancy industry personnel to understand and promote the development of big data technology.