Anti-seepage structure of small reservoir

The utility model relates to the professional technical field of water conservancy, in particular to an anti-seepage structure of a small reservoir. Comprising a water retaining structure and a pond disc, the water retaining structure is mainly a reinforced concrete thin-wall structure, a first sand gravel permeable layer is arranged on the downstream face of the reinforced concrete thin-wall structure, a first filter screen is arranged at the bottom of the first sand gravel permeable layer, a drainage pipe is arranged below the first filter screen, the main structure of the pond disc is a first concrete plate, and a second sand gravel permeable layer is arranged at the bottom of the first concrete plate. After long-term water storage operation, pond water permeates into the bottom of the pond and the bottom of the pond disc, the first sand-gravel permeable layer is arranged on the downstream side of the water retaining structure, and the second sand-gravel permeable layer is arranged at the bottom of the pon