Ensiling,a wet preservation method,is an appropriate method of storing feedstock for biogas production.Fresh maize straw,contain enough water-soluble carbohydrates,is the prevailing material producing biogas,butresearch on preservation and storage of maize straw as feedstock for anaerobic digestion is still in its infancy.Generally in China,the free sugars are consumed,the water evaporates during wilting and field drying,giving rise tofail to achieve the demand of good-quality silage.In view of strong complementary in terms of physical structure,nutrient/moisture content of maize straw and vegetables,this paper propose a hypothesis of trans-seasonal mixedensiling for biogas production.The objective of the current work was to evaluate effects of different mixed ratio ofmaize straw(MS)and cabbage wastes(CW)on silage quality,taking into account the silage quality,chemicalcomposition and structural properties of feedstock.Mixed ensiling of maize straw and cabbage waste were preparedin 1.6-L plastic silos at 25℃.