Provided is a naturally purified ecological pond formed by mutually connecting an ecological pond and a purification pond to each other. When a chemical pollutant such as nitrogen passes through cleaning equipment and water purification plants, which are installed in the purification pond, the polluted chunk passes through a cleansing process of the purification plant and is removed. [Reference numerals] (AA,NN) Stack natural stones(3-5), round stones； (BB) OVERFLOW 150A(refer to an equipment drawing)； (CC) Plant aquatic plants(refer to a planting plan)； (DD) Spread river gravel (D50-300 THK 100-150)； (EE,GG) Nonwoven fabric(300g/m)； (FF) Ecological waterproof sheets T1.5(H-EDDM)； (HH) Sand compaction THK 100-150； (II) Rubble stone(mixed stone) THK 50-100； (JJ) Ground compaction； (KK) Perforated drainpipe installation(double wall pipe D100)； (LL) Water surface(0-1.300mm)； (MM) Install a culvert(double wall pipe D100) and connect an end drain pipe as a natural type waterway생태연못자연정화연못은 생태연못과 정화연못이 상호 연결하여 정화연못에 설치된 정화 식물과 세정장치를 통과하는동안 자연적으로 화학적 오염물질인 질소등은 정화식물이 물속의 오염덩어리는 세척과정을 통하여 제거되는 자연정화형 정화장치
