Abstract: The phenomenon of coal and gas outburst, triggered by factors including mining-induced stress, manifests as coal seam rupture and rapid gas expulsion. Elucidating the changes in stress, pore pressure, and temperature during this process holds paramount importance for understanding the outburst mechanism and devising preventive measures. To investigate the role of mining-induced stress fluctuations in initiating coal and gas outburst, the abnormal coal support stress was focused on, observed in the Pingdingshan No.12 mine where the Wu and Ji coal seams overlap. Utilizing a multi-field coupling coal and rock dynamic disaster prevention and control technology simulation system, outburst experiments were conducted on coal specimens. Variations in pore pressure and temperature were tracked by these experiments, analyzing the impact of sustained dynamic loading on gas pressure and temperature during the outburst process. The experimental findings reveal that the continuous application of mining-induced stress leads to stress concentration, narrowing the surface area of coal pores and cracks, which in turn elevates the internal pore pressure within the coal, facilitating the flow and propagation of coal and gas, potentially precipitating premature coal and gas outburst. High-frequency dynamic loading accelerates the rise in pore pressure, ultimately triggering a gas outburst once the critical blasting pressure is attained, leading to a rapid depletion of gas pressure. Regarding temperature fluctuations, during the initial injection stage, several factors contribute to an elevation in coal's internal temperature, including enhanced intermolecular forces among gas molecules, the conversion of compressed gas work into heat energy, and the gradual release of gas. Subsequently, during the adsorption equilibrium phase, the internal gas pressure stabilizes, and the heat within the coal gradually dissipates into the surrounding environment, resulting in a modest temperature decrease. However, during the injection-induced outburst phase, dynamic loading and gas injection cause a surge in the internal temperature of the coal cavity. Finally, during the induced outburst phase, the abrupt release of gas leads to a significant temperature drop. Therefore, in devising the prevention and control measures for coal and gas outburst accidents in mining operations, the influence of mining-induced stress must be taken into account.