The invention discloses an intelligent control system for a multifunctional rainwater regulation and storage pond. The system comprises a field layer, a monitoring layer and an internet layer; the field layer comprises a regulation and storage pond water inlet valve, a regulation and storage pond liquid level meter, a water quality detector, a water pump, a water outlet tank liquid level meter, aclean water pump, a shut-off valve, a drain pump and a three-way valve; the monitoring layer comprises a PLC, a switchboard and an engineer station, the PLC controls the regulation and storage pond water inlet valve, the regulation and storage pond liquid level meter, the water quality detector, the water pump, the water outlet tank water level meter, the clean water pump, the shut-off valve, thedrain pump and the three-way valve to work, and the PLC is connected with the engineer station through the switchboard; the internet layer comprises a server, and the server is connected with the switchboard. The invention further provides an intelligent control method for the multifunctional rainwater regulation and storage pond. In the intelligent control system and method, appropriate functionsare automatically selected according to current weather conditions, the multi-functionalization of the regulation and storage pond is realized, and the functions of regulation and storage, surface source pollution control and rainwater reuse are integrated in the regulation and storage pond.