The application of electromagnetic fields in industrial water treatment has been a recent research focus. Based on the anti-corrosion effect of electromagnetic fields in the circulating water system, the corrosion of pipes is observed, and the concentration of iron ions in the circulating water is measured to assess the anti-corrosion effect of the electromagnetic field. The high-frequency signal generator releases signals in the processing cavity and controls them, creating a high-frequency electromagnetic field within the cavity. When water flows through the cavity, it absorbs the energy of the high-frequency electromagnetic field, thereby altering its physical and chemical properties, promoting the detachment of rust, and facilitating the formation of a dense layer of iron oxide on the inner wall of the pipe. This ultimately achieves the anti-corrosion effect. Using a self-built experimental platform, the influence of electromagnetic fields on the corrosion of circulating water pipes is explored, and its mechanism is discussed.