Abstract: Biogas slurry has gradually become a hot new type of organic fertilizer and research hotspot in the field of agricultural planting, which has a significant impact on the crop itself, the soil repair mechanism or the atmosphere and water environment; there are also many ways to use biogas slurry, including liquid spraying and root fertilization; at the same time, the biogas slurry application in the field of soaking and bio-pesticide has covered a wide range of roles and played a vital role. Inevitably, pros and cons coexist in the process of biogas slurry applicated as fertilizer, some details that need to be paid attention to and cannot be ignored in the practical application of biogas slurry have yet to be further studied, for the purpose of achieving a final harmonious, safe and efficient use principle, and thus ensure the economic fertilizer source of biogas slurry can maximize the benefits. For this reason, the author outlines the research progress of main ways and methods, the results obtained, the evaluation of environmental benefits and the existing problems of biogas slurry in agricultural application through a large number of survey statistics of literature resources, and prospects for the research direction and expected results of future resource utilization of biogas slurry, in order to provide a reference for the comprehensive universalization and safe and stable development of biogas slurry in the agricultural field.