The utility model relates to an aluminium book is skinned and is used safety knife utensil, including art designer's blade, blade fixing base and the handle of a knife that sets gradually from inside to outside, the front portion is provided with the passageway that supplies the business turn over of art designer's blade in the blade fixing base, the handle of a knife includes preceding handle and back handle, blade fixed seat rear end portion is provided with the screw thread post, the preceding tip of back handle is provided with the screw hole with the interlock of screw post looks, preceding handle is the cavity barrel, and the tip inside wall is provided with ring -shaped convex part thereafter, and this ring -shaped convex part takes in blade fixed seat rear end portion to make preceding handle ability free rotation and do not drop, all be provided with the rectangular shape stroke groove who runs through the lateral wall on preceding handle and the blade fixing base, be provided with the bolt and nut subassembly that is used for locking tip behind art designer's blade in the stroke groove. This cutter work efficiency is high, safety.