Provided is an ecological cycle pig breeding method. The ecological cycle pig breeding method comprises the step of making wine and vinasse, the step of making vinasse feed, the step of breeding maggots through excrement, the step of carrying out ecological organic breeding, the step of using excrement to generate biogas, the step of utilizing excrement maggot breeding by-products, the step of producing organic feed and the like. According to the ecological cycle pig breeding method, the cost is reduced by 15% due to the vinasse feed, the cost is reduced by 15% due to feed with adult maggots, and the breeding cost is comprehensively reduced by more than 30%; protein feed is added; pig breeding cycle is short, and the slaughtering rate is high; health of live pigs is improved, and immunity is improved; the purposes of cycle breeding, cleaning production and zero emission are achieved, and environmental friendliness is achieved; products are various, original-ecology products such as the wine, the vinasse, organic live pigs, organic fly maggots, biogas and biogas slurry are obtained, the risk resistance capacity is high, and the ecological cycle pig breeding method is particularly applicable to ecological or organic live pig breeding of a single household, or large-scale and industrial live pig breeding. The ecological cycle pig breeding method is also applicable to ecological breeding of livestock and poultry such as cattle, horses, donkeys, deer, chickens, ducks and gooses. The ecological cycle pig breeding method is particularly applicable to ecological or organic live pig breeding of a single household or large-scale and industrial live pig breeding, and is convenient to demonstrate and popularize.