Provided are: a fermented material which is effective for the prevention of squamous carcinoma that is developed by Candida infection； a model animal for squamous carcinoma that is developed by Candida infection, in which the difference among individuals is smaller than those in conventional model animals and pharmacological efficacy can be evaluated more properly； and a method for producing the model animal. A prophylactic agent for squamous carcinoma that is developed by Candida infection, which comprises a fermented material produced by fermenting milk with L. bulgaricus, S. thermophilus and L. gasseri as an active ingredient.
