The present invention relates to a purifying block including a block body installed to be fixated to a water passage and including a water-flow hole on the surface and a coupling protrusion unit and a coupling groove unit formed on the outer circumference and capable of being connected to be planar an inner contacting member of the block body adsorbing heavy metals on which microorganism is attached an vegetation member of the block body preventing damage to the contacting member on which an aquatic plant is planted. The vegetation member includes an inner vegetation mat of the block body having the underside in contact with the contacting member wherein vegetation soil functioning as the vegetation basis of the an aquatic plant is received a cover formed on the upper side of the block body and having the underside in contact with the top surface of the vegetation mat to support the vegetation mat and a fixed protrusion unit formed inside the block body and having one side connecting to the underside of the cover and the other side bent outward to the block body and fixated by being locked by the water-flow hole. When the coupling protrusion unit protrudes from the one outer circumference of the block, the coupling groove unit is formed on multiple adjoining outer circumferences to be recessed. The protruding degree of the coupling protrusion unit and the recessed degree of the coupling groove unit are the same. When the fixed protrusion unit is fixated to the block body, the cover presses the vegetation mat to prevent the separation of the aquatic plant and the contacting member.COPYRIGHT KIPO 2015본 발명은 정화블록에 관한 것으로서, 수로에 고정되게 설치되고 그 표면에는 물이 유동할 수 있도록 유수공이 천공되어 있고, 평면적으로 연결할 수 있도록 그 외주면에는 결합돌부와 결합홈부가 형성되어 있는 블록체, 상기 블록체 내에 구비되고 미생물이 부착되어 구비되는 한편 중금속을 흡착하는 접촉부재 및 상기 블록체에 구비되어 접촉부재의 유실을 방지하는 한편 수생식물이 식생되는 식생부재를 포함하고, 상기 식생부재는, 상기 블록체 내부에 배치되어 그 하면이 상기 접촉부재와 접하며 수생식물의 식생 기반이 되는 식생토가 담겨 있는 식생매트, 상기 블록체의 상부측에 배치되어 있고 그 하면이 상기 식생매트의 상면과 접하며 상기 식생매트를 지지하는 덮개 및 상기 블록체의 내부에
