Abstract: In order to make pig breeding intensive and large-scale development，in 2018，Neixiang County Animal Husbandry Bureau and Muyuan Food Co.，Ltd.explored odorless gravity dry manure cleaning process.With people′s increasing expectations of environmental protection and urgent need of country to restore pig production capacity，technology has been upgraded to building type breeding technology.Combined with building type meat complex project in Neixiang county，building type breeding technology of pig breeding was preliminarily explored to provide reference for similar projects.