The utility model discloses a circulation test device for corrosion monitoring, including the dolly, install the liquid reserve tank on the dolly, seted up the filling opening on the liquid reserve tank respectively and returned the liquid mouth, and installed the circulating pump on the liquid reserve tank, go back to liquid mouth top and install the combination pipe, the terminal liquid outlet intercommunication with the circulating pump of combination pipe, and make up the intraduct and be provided with a plurality of test probe, the utility model provides a single technical problem of dataacquisition among the prior art.