3D printing filament consumables are the core consumables suitable for FDM/FFF melt deposition molding process. They are made of polymer materials as the substrate, extruded and pelletized into continuous filament of fixed diameter. After being heated and melted by the 3D printer nozzle, they are deposited layer by layer according to the preset path, cooled and solidified, and finally formed into a 3D solid model. As the most widely used consumable type in the current 3D printing industry, 3D printing filament has the advantages of easy operation, wide equipment adaptability, stable molding effect, and controllable cost. It can meet the diverse needs of prototype sampling, small batch production, personalized customization, industrial functional component manufacturing, etc. It is widely used in multiple fields such as consumer goods, industrial manufacturing, cultural and creative toys, automotive parts, medical and health, and is an important carrier for the industrial application of 3D printing.