The invention discloses a sponge city rainwater regulation and storage pipe network system and a construction method thereof. Annular partition plates are arranged between bored piles of a regulation and storage tank in the system, and a plurality of rainwater regulation and storage spaces are divided by the annular partition plates; a U-type plate is arranged on a supporting base, a water outlet pipe is arranged in the U-type plate, a steel plate is arranged on a fixed base, the side face of the steel plate is provided with clamping plates, and a water main is arranged between the clamping plates. The construction method comprises the steps that 1, a foundation pit is excavated, 2, construction areas are divided, 3, the regulation and storage tank is constructed, 4, a pipeline supporting device is built, 5, pipelines are arranged, 6, the end portion of the water main is connected with an external water outlet connected with an embedded pipe, and then, a water supply control tank is arranged on the embedded pipe. According to the sponge city rainwater regulation and storage pipe network system and the construction method thereof, rainwater on urban roads are hierarchically stored and can be sectionally controlled and used, the application range is wide, the system can be used in a non-drinking water environment at the same time, the resource utilization efficiency of the rainwater is improved significantly, the construction procedures are simple, and the construction equality is easy to control.