To provide an immunopotentiative food produced by mixing a processed material obtained by drying and pulverizing at least one of medium, mycelium or fruit body, with young rice leaf-processed material containing about 71 wt.% of dietary fibers so as to exert a satisfactory synergistic effect between anticancer function and intestinal environment-improving function based on activation of peristalsis of the bowels via the dietary fibers, and enabling a user to take ingredients contained in the food as it is without causing wastes of ingredients because at least one of the medium, the mycelium or the fruit body is dried and pulverized to be processed without using any hot-water extract.

The immunopotentiative food is produced as follows: mixing (n11) processed material 1 obtained by drying (n2) and pulverizing (n3) at least one of culture medium 4 generating fungi, mycelium generated in the culture medium 4 and fruit body with the young rice-leaf processed material 2.