Abstract: Swine production industry in Hebei Province has a long history. Due to the intrinsic hysteresis in production and pork price cycle, the swine breeding becomes the weakest link in swine industry chain in terms of economic benefit. In order to better reduce the pork price fluctuation, improve the breeding benefit and steady swine production, we analyzed the influencing factors associated with economic benefit of swine production with different scales in Hebei Province from 2006 to 2015, and determined the key factors associated with economic benefit of swine production by using cost and benefit theory and production function model. The results showed that piglet＇s price and feed price was found as the key factors and significant factors associated with economic benefit of swine production, respectively; an appropriate increase in quantity of labor force helps to improve the economic benefit of swine production.