Mastitis is the inflammation of various parts of the breast, such as bulb build milk. Milk ducts pipes include milk or hollow nipple. Change characteristics of the breast. Milk and milk components (International Dairy Federation1987).The milk quality worse. So it is an important problem the mastitis of dairy farmers. Because in addition to the milk quality to deteriorate and milk yield decrease and also to increase the expense in treatment.Consumers don't want to drink milk. Besides milk may poison from bacteria. Or drugs used in the treatment of left. Which will harm consumers.But may be caused by a fungus or Yi in Wirral. Cattle can infect bacteria. From cows with mastitis and from the environment around it, such as a stool, stable hand who rolled floor, etc.