The present invention relates to a method for producing useful metabolites such as shikimic acid from filamentous fungus. The useful metabolites can be produced by a production method involving a step of inhibiting the growth of the filamentous fungus, specifically by applying a stimulus of light having a center wavelength shorter than 570 nm to the filamentous fungus, to increase the content of the useful metabolite in a hypha of the filamentous fungus.
