Disclosed is a composition for preventing or treating obesity, dyslipidemia, fatty liver or diabetes, containing an indole-3-carbinol derivative as an active ingredient. The indole-3-carbinol derivative of the present disclosure can be usefully used as a pharmaceutical or functional food composition for preventing or treating obesity, dyslipidemia, fatty liver or diabetes by inhibiting differentiation of preadipocytes and reducing accumulation of triglyceride in cells.