The invention relates to a method for preparing titanium carbide powder by high-frequency induction-carbothermic reduction. A high-frequency induction method is adopted, and titanium white and carbon serve as raw materials; titanium white and carbon at the mass ratio of 20:9-21 are broken and pressed into blocks to be sent into an induction furnace to be heated to 1600-1800 DEG C when the current is controlled to be 400-600 A; warm is kept for 10-50 minutes to carry out carbothermic reduction reaction on materials so as to prepare titanium carbide powder less than 1 mu m.