Abstract: Spontaneous combustion of coal remains in coal mining goaf is a frequent disaster, which seriously endangers the safety production of mines. In order to prevent the spontaneous combustion of coal remains in the goaf, an amine-modified solid waste porous material is investigated in this paper, and the carbon dioxide adsorption performance and the spontaneous combustion inhibition characteristics of the amine-modified solid waste porous material are studied. The results show that the organic amine modifier can be successfully loaded on the solid waste porous particles, and among the different organic amine （ethanolamine （MEA）, diethylene triamine （DETA）, tetraethylenepentamine （TEPA）, and polyethyleneimine （PEI）） modified porous particles, the carbon dioxide adsorption property of the porous particles modified with tetraethylenepentamine （TEPA） is best. The results of CO₂ adsorption experiments show that the porous particles have the best performance. The results of CO₂ adsorption experiments show that the CO₂ adsorption amount first increases and then decreases with the increase of modifier loading, and the maximum adsorption amount reaches 119.24 mg/g at 25 ℃ and 1 bar with 20 wt% of organic amine loading; the CO₂ adsorption amount increases and then decreases with the increase of temperature at the same modifier loading, and the maximum adsorption amount reaches 128.97 mg/g at 70 ℃. The results of the programmed temperature rise test show that compared with the addition of modified particles without adsorbed CO₂, the addition of modified particles with adsorbed CO₂ increases the cross-point temperature of the coal samples by 29.2 ℃, which effectively reduces the risk of spontaneous combustion of coal, and the CO₂ adsorbed by the modified particles in the process of temperature rise is able to desorb and reduce the oxygen concentration around the coal particles, which inhibites spontaneous combustion of the coal remains in the goaf. This study is of great significance to promote the efficient use of industrial solid waste and the development of efficient prevention and control technology for the spontaneous combustion hazard of coal in the goaf.