The purpose is to provide the truffle mycelium and fruiting body cultivated by the medium that are developed for cultivating the truffles with a very high radical oxygen scavenging capacity. A medium for cultivating truffles includes a mixture of at least one carbohydrate source selected from a group consisting of rice bran, wheat bran, and glucose, and at least one edible ingredient selected from a group consisting of burdock, nuts, and berries. A weight ratio of the edible ingredient to the carbohydrate source is between 0.5 and 5. As for one of the ingredients, it is preferable that the burdock is granulated. The medium may exist in a liquid state. By injecting truffle seeds for cultivation into such a medium, the truffle mycelium and fruiting body with the high reactive oxygen scavenging capacity could be provided.
