Abstract: A filter apparatus, namely the first filter apparatus, the second filter apparatus, and the third filter apparatus, filters water from the faucet introduced into the intestinal tract cleansing apparatus. A heating unit heats the filtered water. The reverse osmosis membrane apparatus generates pure water by utilizing reverse osmosis membrane to treat the heated water. A high-pressure regulation unit pressurizes the pure water treated with the reverse osmosis membrane, and floods the pure water as pure water for cleansing an intestinal tract of human beings from a flooding opening.