Our test is to realize the change of shrimp ponds water quality caused by rain, and theurgent influence it caused on shrimp. During the culture period, we generally usedcommon breeding ways, but when it is raining, we will start paddle wheels to add moredissolved oxygen content and putting lime to get steady pH value in treated ponds.Doing those above are hopefully to low down the influence caused by rain on shrimpand increase the survival rate of Penaeus monodon. In the test, we check the items ofthe water quality, Vibrio, growth and the healthy condition of shrimp, etc.