Abstract: Raising pigs on biology bed a new and environment friendly technology that based on natural agriculture and microbial fermentation. It can effectively dispose pig excrement, reduce the excretion of wastewater, feces, carbon and nitrogen, then avoid the environment pollution and reduce the energy loss. Compared with fed pigs on cement ground, fed pigs on biology bed can significantly improve the environment of house and the swine’s welfare, and it also shows good prospects in promoting the growth, pork quality and health of pigs. Pig-raising on biology bed have advantages of environment protection and economic benefit. Consequently, it has a wide prospect of application.

Key words: bio-bed system; pig-raising; fermentation; research progress