1. It is conducive to protecting the ecological environment. Biogas purification solves the fuel problem of farmers and improves the agricultural ecological environment.

2、有利于解决农村能源问题。只要发酵原料充足，并管理得好，就能解决点灯、煮饭的燃料问题。

2. It is conducive to solving the problem of rural energy. As long as the fermentation raw materials are sufficient and well managed, the fuel problem of lighting and cooking can be solved.

3、有利于改善卫生条件。利用沼气当燃料，无烟无尘，清洁方便。一些粪便、垃圾、生活污水等都是沼气发酵的好原料，从而改善了农村的环境卫生条件，对人畜健康都有好处。

3. It is conducive to improving sanitary conditions. Using biogas as fuel, it is smokeless, dust-free and easy to clean. Some faeces, garbage and domestic sewage are good raw materials for biogas fermentation, which improves the environmental sanitation conditions in rural areas and is good for human and animal health.

4、有利于促进农业生产发展。大量畜禽粪便加入沼气池发酵，即可生产沼气，又可沤制出大量优质有机肥料，扩大了有机肥料的来源。

4. It is conducive to promoting the development of agricultural production. A large number of livestock manure is added to the biogas digester for fermentation, which can produce biogas and Rett a large number of high-quality organic fertilizers, expanding the source of organic fertilizers.

5、有利于促进畜牧业的发展。办起沼气后，有利于解决“三料”（燃料、饲料和肥料）的矛盾，促进畜牧业的发展。

5. It is conducive to promoting the development of animal husbandry. After running biogas, it is conducive to solve the contradiction between "three materials" (fuel, feed and fertilizer) and promote the development of animal husbandry.

6、生产无公害蔬菜。把沼气通入温室大棚中燃烧，所产生的二氧化碳作为气体肥料，不仅可促进植物的生长，还可抑制许多病虫害的发生。

6. Produce pollution-free vegetables. The carbon dioxide produced by burning biogas in the greenhouse can not only promote the growth of plants, but also inhibit the occurrence of many diseases and pests.

7、有利于解放劳动力。节约了生火做饭的时间，减轻了家务劳动。沼气是一种清洁能源，所以各国都在农村推广。

7. It is conducive to liberating the labor force. It saves the time of making a fire and cooking and reduces the housework. Biogas is a kind of clean energy, so all countries promote it in rural areas.