With the rapid development of economy, China has become the country with the largest use of biogas. In recent years, with the rapid development of rural economy, rural infrastructure construction is also increasing. Biogas engineering, as an ecological hub project for pollution control and waste resource utilization, has also received more and more attention During the 12th Five Year Plan period, the State encourages the construction of large and medium-sized biogas projects and adopts the mode of commercialization and industrialization to achieve sustainable development and benefit pulling In order to facilitate the collection of raw materials and the use of products, biogas projects are mostly located in rural township planting areas or breeding areas.