Sponge city rainwater purification structure

The utility model belongs to the technical field of rainwater purification, particularly relates to a rainwater purification structure of a sponge city, and aims to solve the problems that an existing rainwater purification structure is poor in effect and low in combination degree with the city, and a water pump needs to be manually started to drain water, the rainwater purification structure of the sponge city comprises a planting layer, and a soil purification layer is arranged at the bottom of the planting layer. The planting layer is provided with a soil purification layer, the bottom of the soil purification layer is provided with a gravel layer, the bottom of the gravel layer is provided with a cement impermeable layer, the top of the cement impermeable layer is provided with a rainwater purification pool, the rainwater purification pool penetrates through the planting layer, the soil purification layer and the gravel layer, and the side wall of the rainwater purification pool is provided with a plurali