The utility model relates to a gas circuit structure of an
air compressor, which comprises a first compressor, a second compressor, a driving motor connected between the first compressor and the second compressor, and a filter arranged at a gas input end, the
electromagnetic valve assembly comprises a first
electromagnetic valve and a second
electromagnetic valve which are arranged on one side of the filter; in a series connection mode, the first electromagnetic valve controls the first
airflow passage to be conducted, the second
airflow passage is closed, and external air enters the first compressor at the moment; in the parallel connection mode, the first electromagnetic valve controls the first air flow channel and the second air flow channel to be communicated, and air enters the first compressor and the second compressor. Series-parallel connection
dynamic switching can be achieved, the series connection mode improves the pressure output capacity, the parallel connection mode meets the requirement for large flow, and the production cost is reduced while different pressure and flow requirements are met.