Abstract: To address severe atmospheric pollution from municipal solid waste incineration and explore new avenues for resource utilization, a technical scheme combining solid waste plasma gasification with coke oven gas catalytic reforming is developed for efficient green methanol production. This approach utilizes plasma gasification as the core process to rapidly pyrolyze and gasify waste, yielding syngas rich in CO and H2. Coke oven gas is introduced as a supplementary feedstock, and catalytic reforming further optimizes syngas composition to enhance methanol synthesis suitability. A comprehensive simulation model encompassing plasma gasification, catalytic reforming, syngas purification, and methanol synthesis is constructed in Aspen Plus to analyze the entire process and compare it with a water-gas shift-based methanol production scheme. Results show that the proposed system achieves a methanol synthesis yield of 90.57% and an energy efficiency of 61.28%, representing improvements of 1.07% and 6.19%, respectively, over the water-gas shift scheme. Its exergy efficiency reaches 63.74%, indicating rational and efficient energy utilization. Annually, the system can process 74.91 t of solid waste, 7734.76 t of coke oven gas, and produce 16270.55 t of methanol. Notably, per ton of green methanol produced, CO2 emissions are below 0.06 t, significantly lower than the 0.72 t emitted by the water-gas shift scheme and even achieving negative carbon emission compared to incineration. Thus, this scheme realizes not only efficient resourceful utilization of waste but also promotes low-carbon green chemical production, exhibiting remarkable advantages in thermodynamic performance and environmental friendliness.