The invention discloses a lean-type Duba pig and a breeding method thereof, and belongs to the technical field of the animal breeding. The breeding method comprises boar breeding hybridization and feeding, wherein the boar breeding hybridization specifically comprises the following steps: using a Duroc boar as an ancestral male parent for hybridizing with a Bacchus sow, breeding second-generationpigs, selecting a second-generation sow as a maternal line female parent for hybridizing with the Duroc boar as a maternal line male parent, and breeding the lean-type Duba pig; and the feeding specifically comprises the following steps: according to different stages of pig growth, developing a natural green pig feed suitable for the different growth stages and feeding the pig, improving quality of the lean-type Duba pig, and shortening incubation time and cost. A lean meat percentage of the lean-type Duba pig bred by the method is up to 69%, a feed conversion ratio is 2.40, the economic benefit of pig breeding is improved, and the application prospect is extensive.