Using self-made equipment for fermentation processing using corn straw,can control the fermentationconditions relative,and shorten the process of the making bio-medium. It includes two fermentation processes,inthe tower and in the square. The bio-medium was prepared and the physical and chemical properties were analyzed.The corn straw after fermentation treatment,it bulk density and hold water porosity increase,and the total porosityand ventilation porosity reduce,enhencing the medium's fixed role and hold ...