This paper describes development of milking machine. This milking machine innovate tongue motion. We recently reaffirm importance of breastfeeding. Because breast milk excel in nutrition value and immune properties, sucking behavior affect development of gnathic bone. In addition, women's social advancement makes the needs of milking machine increased. General milking machine is pumped breast milk by negative pressure. There is a possibility that such sucking behavior exert an unexpected influence on mother's body. We developed new milking machine. It emulates human's sucking behavior. The present study carried out the difference of quantity of sucking milk among several artificial rubber nipples. The experimental result shows availability of new milking machine.
