Abstract: In order to reveal the effects of molecular membrane coverage coupled with biochar on ammonia emission reduction and maturation in aerobic fermentation, this study used tomato straw and mushroom residue as raw materials, and used selectively permeable expanded polytetrafluoroethylene（E-PTFE） material molecular membranes with 5% biochar. A 33-day aerobic fermentation experiment was conducted on a laboratory scale（500 L）. The results showed that molecular membrane coverage coupled with biochar could effectively increase the temperature of compost materials, extend the duration of the high temperature period. Compared with the control group（CK） sample, the time was advanced by 12 days when the seed germination index（GI value） of the Molecular Membrane Cover Coupled with Biochar group（T1） sample reached 70%. During the fermentation cycle, the ammonia（NH₃） emissions of the experimental group（T1） decreased by 34.8% compared to the control group（CK）. Molecular membrane coverage coupled with biochar aerobic fermentation technology can effectively accelerate the fermentation reaction process and reduce NH₃ emissions.