From the definition of the American Society for testing and materials, increasing material manufacturing is based on the3D CAD data material connection process objects, is a process of accumulation layer; 3D refers to the print object manufacturing technology using the print head, nozzle or other printing material deposited, 3D printing is also used to increase representation material manufacturing technology. Additional material manufacturing technology is different from the traditional machining method, machining method using 3D design data of rapid prototyping in one device, solve many complex parts forming problems, and effectively shorten the processing cycle. So far, increasing material manufacturing technology has been successfully applied in food, art, fashion, aerospace, automotive, medical, construction and education industries, by the U.S. "time" magazine as "the ten fastest growing industry", the British "economist" will be regarded as "the third the industrial revolution". It can be seen that the advantages and development prospects of the
technology of increasing material manufacturing.