<p>Non-thermal plasma technology has garnered significant attention for its ability to handle large flows of volatile organic compounds and minimal environmental impact. However, disadvantages such as low energy efficiency, high energy consumption, and low mineralization rate hinder its broader application. Introducing external magnetic field to the plasma reactor is expected to weaken these disadvantages without additional energy input and enhance pollutant removal efficiency. This review thoroughly examines how magnetic field effects the degradation of volatile organic compounds in non-thermal plasma systems. The influence of magnetic field strength, length, and placement on plasma discharge current have been discussed comprehensively, with a detailed explanation of the underlying mechanisms. The effect of pulse repetition rate on discharge current of nanosecond pulse power supply is also discussed. Moreover, to acquire a more profound understanding of the mechanisms by which magnetic fields affect the degradation of volatile organic compounds, the effects of these factors on overall removal efficiency are summarized. Key performance indicators, such as removal efficiency, energy yield, and carbon dioxide selectivity, are systematically reviewed in the presence of an external magnetic field. Finally, future directions for integrating magnetic field and non-thermal plasma technology are discussed.</p>