The invention provides a method for producing organic Cucurbita pepo by using a winter protected area. The method comprises the steps of carrying out purely-natural male flower pollinated fruiting in the winter protected area, of which the minimum air temperature is not below 2 DEG C, by selecting an excellent organic Cucurbita pepo first-filial-generation variety, which is cold-resistant and fruitful and is vigorous in winter growth and high in disease resistance, purifying soil, carrying out crop-rotation rotation of crops, only applying organic fertilizers in a whole growing season, not using chemical pesticides to prevent and treat diseases and insect pests, and not using hormones to stimulate fruit setting. According to the method, specific rules and limits (the minimum air temperature is not below 2 DEG C) for the flowering and fruiting of the Cucurbita pepo under low-temperature and dim-light conditions are defined for the first time, the difficult problem in the production of organic melons (Cucurbita pepo) in winter is solved, the hormones are not used to stimulate fruit setting, and the whole planting process only uses purely-natural male flower pollen in fields and gardens to carry out pollinated fruiting. The method is simple and convenient, the production cost is not increased, operation and popularization are facilitated, genuine Cucurbita pepo, i.e., organic food melons are produced through the winter protected area, the yield is close to that of the conventional planting methods, however, the quality and mass of the organic food melons are effectively guaranteed.