It is an object of the present invention to provide a malignant tumor treatment agent that causes no serious side effects as seen in medicine and is highly safe even in long-term daily use because it is made of food material(s), while being superior to the capabilities of the conventional malignant tumor treatment agents, and food and drink including the same. A malignant tumor treatment agent comprising, as an active ingredient, a mixture obtained by mixing together MUGI KOJI (koji malt), SHIITAKE mushroom (Lentinula edodes), coix seed, cacao, nutmeg, coffee, gansun (bamboo shoots), parsley, stevia, and mint. The malignant tumor treatment agent of the present invention and the food and drink including the same show significant effects on malignant tumor treatment. Furthermore, because the food materials are used as raw material, the treatment agent and the food and drink cause no serious side effects as seen in radiation therapy and chemotherapy and are highly safe. In addition, the food and drink of the present invention can be used to continuously treatment malignant tumor in daily life.
