To provide a method for producing a feed silage which gives a uniform silage production by uniformly dispersing a mineral component derived from mulberry leaves. A production of feed silage including a mineral component derived from mulberry leaves by mixing 5 to 50 parts by weight of ground mulberry leaves and 95 to 50 parts by weight of one or a plurality of cut coarse feed; adjusting a water content; and subjecting to fermentation, in which the coarse feed may preferably be obtained by cutting leaves of corn or leaves and corn.