Abstract: Piglet diarrhea is not only the main faction affecting the quality of piglet,but also the main reason leading to the death of the piglet.It is a kind of illness mainly caused by the abdomen infecting and is always one of the most important and difficult problems for raising pigs.This text on the one hand analyzes the disinfected（the environment,the piglet own and so on）and infectious（bacterium,virus,parasite and so on） aspects that caused the illness.On the other hand,she poses a comprehensive scheme.Putting prevention first,scientific raising,pharmaceutical treatment to solve it.And thus this text has a quilting significance to the development of raising pigs.