Initial rainwater treatment system and use method

The invention provides an initial rainwater treatment system and a use method, and relates to the field of sewage treatment. The initial rainwater treatment system comprises an intelligent intercepting well, the intelligent intercepting well is connected with an efficient and rapid filter A through a pipeline, and the end, away from the intelligent intercepting well, of the efficient and rapid filter A is connected with a sponge purification system through a pipeline. The end, away from the efficient and rapid filter A, of the sponge purification system is connected with an efficient and rapid filter B through a pipeline, the end, away from the sponge purification system, of the efficient and rapid filter B is connected with a riverway purification gallery through a pipeline, and the other end of the riverway purification gallery is connected with a riverway through a drainage pipeline. On one hand, the utilization rate of treatment facilities is improved through different running modes for treating rainwater