Abstract: Art knives are an indispensable tool for art students. When going out to sketch, many students wonder if they can carry art knives. So, is the Meii knife a controlled tool? Can Meidao take high-speed trains or trains with him? According to the "Standards for the Identification of Controlled Cutting Tools", artistic knives are not considered as controlled cutting tools. However, American knives cannot be carried on high-speed trains or trains.