Permeation type rainwater garden

The permeable rainwater garden comprises a pit slot formed by digging an original soil layer, a water storage layer, a permeable layer and a planting soil layer are laid in the pit slot from bottom to top, and a concave planting space is defined by the top face of the planting soil layer; a water inlet of the rainwater storage and collection pipe is located outside the concave planting space and used for rainwater to flow in, and a water outlet of the rainwater storage and collection pipe is located in the rainwater introduction concave planting space; a water inlet of the overflow pipe is located in the concave planting space, and the overflow pipe penetrates through the side wall of the concave planting space to be communicated with the drainage ditch. The rainwater filtering structure is simple in structure and convenient to construct, the rainwater filtering effect is good through the plant root systems and the multiple stages of permeable layers, the filtered rainwater directly permeates into the ground,