Household biogas digesters can improve sanitary conditions by preventing the breeding of flies and mosquitoes in untreated manure in hot weather. The Improved living conditions for local people are beneficial for people’s physical quality. Biogas lamps, biogas rice cookers, and biogas stoves would directly improve the living and educational conditions for rural population, especially for women and children by saving time to collect firewood for cooking. Besides, safer organic fertilizer, slurry and sludge are provided from household digesters, thus will result in agricultural production increase and chemical fertilizer consumption decline. This is also beneficial for the financial situation of the families in a CO2 neutral way and at the same time it will protect the environment.