The invention discloses a method for free-ranging domestic ducks and broiler chicken in a fructus trichosanthis field. The method comprises the steps: (1) fructus trichosanthis seed treatment, namelyselecting high-quality and full seeds, and then, soaking the seeds by using a soaking solution to awaken the activity of the seeds; (2) seedling cultivation; (3) dry farmland preparation and seedlingtransplantation; (4) domestic duck and broiler chicken raising, namely free-ranging domestic duck cubs into the farmland, feeding the domestic ducks with spinaches every day, free-ranging broiler chicken cubs in the farmland after the domestic ducks are raised for 2 months, then, feeding sweet scented osmanthus chicken with a feed every day, and expelling the domestic ducks and the broiler chickeninto a house at night; and (5) field harvesting. By using the planting method disclosed by the invention, the seedling cultivation effect and fructus trichosanthis seedling growth are good, the pestand disease resistance is high, and fructus trichosanthis is full in seeds, high in starch and sugar contents, good in sweetness and high in whole yield; and the domestic ducks and the broiler chickenare raised in the farmland, so that the morbidity rate of the domestic ducks and the broiler chicken is low, and the domestic ducks and the broiler chicken are large in average weight as well as compact and fine in meat quality.