The utility model belongs to the technical field of kitchen supplies, concretely relates to tool bit interchangeable formula ceramic knife, include cutter body, tool bit, handle of a knife and the handle of a knife that uses with the handle of a knife cooperation, cutter body and handle of a knife formula structure as an organic whole, the cutter body bottom can be dismantled and is connected with the tool bit, and the cutter body bottom is equipped with the draw -in groove, and the tool bit joint is in the draw -in groove. The utility model discloses simple structure, long service life.