The invention discloses an eucommia ulmoides seed oil powder electuary and a preparation method thereof. The preparation method comprises the steps of pretreatment of raw materials, vacuum microwave heat-moisture treatment, supercritical extraction and oil extraction, mechanical ball milling and activation, ultrahigh-pressure homogeneous treatment, concentration and drying and mixing and drying. According to the method, eucommia ulmoides key fruits are used as raw materials, and eucommia ulmoides seed oil is extracted from the eucommia ulmoides key fruits at first; then, waste eucommia ulmoides seeds after oil extraction are reasonably used as raw materials, technologies such as mechanical ball milling and activation, ultrahigh-pressure homogeneous treatment and spraying and drying are adopted, and seed activation powder which has small-molecular protein, starch and a small amount of eucommia ulmoides gum and has a good embedding effect and emulsifiability is prepared; furthermore, eucommia ulmoides seed oil is used as a core material, seed active powder is used as a wall material, through super-fine comminution treatment and vacuum spraying and drying, powdered oil which is good in mobility and dispersity can be prepared, and the electuary has the functions of reducing blood fat, lowering blood pressure, promoting development of the nervous system, the brain and the retina, preventing the senile dementia and allergy and the like.