With the development of shrimp culture,Because of the high yield, high efficiency and high intensive, the high density aquiculture mode gradually becomes the main breeding mode in the coastal area of southern China .But because the high density, difficulty of management is great. Thus, many problems appears, such as too much residual bait, Water environment easily deteriorated, epidemic outbreaking easily. It serious influences the healthy development of Chinese shrimp industry. In this paper, exper...