<p>The study proposes a plasma-assisted dry reforming of methane (DRM) technology driven by a microsecond pulsed power supply, achieving high CO₂ conversion and high product yield under atmospheric pressure and producing multiple species, including H₂, CO, C₂H₂, C₂H₄ and C₂H₆. The work focuses on elucidating how key operation parameters such as the CH₄/CO₂ ratio, total flow rate, pulse peak voltage, and pulse repetition frequency regulate product distribution and selectivity. Furthermore, optical emission spectroscopy is utilized to analyze the formation pathways of critical reactive species and to elucidate the underlying plasma reaction mechanisms during the discharge process. Research has demonstrated that the gas composition is a pivotal parameter for regulating the H₂/CO molar ratio and the product distribution. As the CH₄/CO₂ ratio decreases from 3 to 1/3, the H₂/CO molar ratio in the resulting syngas drops significantly from 6.76 to 0.22, spanning a wide range that can meet the requirements of various industrial applications. In circumstances where the concentration of CO₂ is marginally elevated, the system exhibits a syngas ratio that approaches unity. The selectivity of CO reaches 57.48%. The enhancement of both the pulse peak voltage and the pulse repetition frequency has been demonstrated to increase the energy input. Furthermore, the rise in frequency has been shown to strengthen the CO formation pathway, thereby achieving an energy efficiency of 66.67 mmol/kJ. The experimental results demonstrate that the conversion rates of CH₄ and CO₂ reach 47.11% and 42.49%, respectively. The production rates of H₂ and CO reach 589.23 mmol/h and 465.02 mmol/h, respectively, while the maximum production rate of C₂H₂ is 49.47 mmol/h. In summary, the optimization of operating parameters effectively regulates product distribution, improves energy utilization efficiency, and provides theoretical support for efficient syngas generation.</p>