Drum washing machine originated in Europe, washing method is to imitate the principle of bar hammer hit clothes design. The drum washing machine is made of stainless steel inner barrel, mechanical program controller, shell protected by phosphating, electrophoresis and spraying, and a number of heavy cement blocks to balance the huge centrifugal force generated by the rotation of the drum to do repeated movement. In addition, the combined action of washing powder and water makes the clothes clean.