Pig casing is a layer of transparent film after processing and scraping of pig intestine, tearing by hand is a net-like, very fine fiber. This fiber is a protein fiber, because of its composition of the network of longitudinal and transverse crisscross, so its longitudinal tension, transverse tension are strong, it is sausage or sausage outside a very thin layer of film, both for hand-enema, but also suitable for machine enema. Sausage enema with pig intestines do not dye, with the naked eye can see the sausage filling, giving a person a clean and hygienic feeling, can increase appetite, and in a certain period of time will not be tasteless, deterioration, storage, carry out and dining are very convenient.