A rubber dam, also known as a rubber sluice, is a dam bag made of high-strength synthetic fiber fabric as a stress-bearing framework, with rubber coated inside and outside as a protective layer, processed into a rubberized cloth, and then anchored to the bottom plate to form a closed shape, a bag dam is formed by filling and bulging the bag with water (gas) through a filling and draining pipeline. The crest of the dam can overflow, and the height of the dam can be adjusted according to the need to control the upstream water level in order to play irrigation, power generation, shipping, flood control, tide and other benefits.