[PERSON] studied the influence of different separate collection methods and separation rate combined with disposal methods of incineration and landfill on GHG emissions in Italy and found that the best model is to landfill the residual waste combined with state-of-the-art energy recycling system [38]. [PERSON] et al. used the life cycle assessment (LCA) model to analyze the impact of recycling of various types of waste on GHG emissions in detail. The results show that the source separation of waste can help reduce emissions [39]. Through the Granger causal relation test, [PERSON] et al. showed that there is a significant negative correlation between waste recycling and GHG emissions from waste [40]. There are a few methods used by researchers to account the GHG emissions from MSW. The fifth chapter of the _National GHG Inventory_ prepared by the Intergovernmental Panel on Climate Change (IPCC) of the United Nations lists the calculation methods for GHG emissions from waste disposal [41]. Many researchers have followed the guidance of the IPCC in the calculation of GHG emissions from MSW [9; 20; 22; 23; 25]. LCA is regarded as an effective method to quantify product sustainability [42]. Therefore, it is also used by researchers in the field of MSW management to evaluate environmental impacts [12; 24; 39; 43]. Clean Development Mechanism (CDM) was proposed under the Kyoto Protocol to reduce GHG emissions through the trade between the developed countries and the developing countries. Researchers use it to evaluate the waste management projects with considering the economic and environmental benefits [44; 45; 46; 47; 48]. In addition, the landfill gas emissions modeling (LandGEM) is specifically used to study the GHG emissions from landfill sites [49; 50].This paper used the guidance method of the IPCC and built the LCA framework to assess the GHG emissions from MSW, including the processes of collection and transportation, landfill, incineration, composting, electricity generation from incineration, and recycling of renewable resources for emission reduction. In recent years, in order to improve the waste management system, China has issued some policies to promote the separation of MSW at the source and realize the integration of the MSW management system with the renewable resource recycling system. So this paper designed five scenarios, one of which was used as the baseline scenario to reflect the existing MSW management system, and the other four reflected the further possible scenarios after the integration of the two systems. Through the comparison of five scenarios, the benefits of emission reduction were analyzed to indicate the environmental feasibility of the integrated system. In addition, some researches have revealed that different types of waste and recycling rate have different effects on GHG emissions. However, few researchers integrated the impact of different waste separation methods and recycling rate on GHG emissions into comprehensive waste disposal strategies. In the actual situation, the Chinese governments often adopt a comprehensive disposal strategy including landfill, incineration, and composting. Therefore, in this paper, different waste separation and recycling methods were taken into account, merging into the comprehensive waste disposal strategies under five different scenarios.