Abstract: To control ecological and environmental deterioration caused by water project construction and meet the prevention and control requirements and targets of water loss and soil erosion, it is imperative to strengthen the dynamic monitoring of water loss and soil erosion in project construction. Taking the Water Diversion Project from Niulan River to Dianchi Lake as an example, we introduce the implementation of soil and water conservation monitoring during the project construction and assess the prevention and control effect of water loss and soil erosion. The monitoring experience is summarized, which can provide reference for similar project monitoring.