The invention discloses a method for improving the hatchability of Muscovy ducks. During the hatching process of the Muscovy ducks, eggs are cooled in the way that eggs with the embryonic age of 8 to 16 days are adopt to be cooled in the open air each day, and eggs with the embryonic age of 17 to 32 days are cooled through water spraying every other day. The method provided by the invention breaks the traditional hatching method, and the frequency of spraying water to cool eggs is reduced, so that the hatchability of Muscovy ducks is improved remarkably, the production process is simplified, and convenience is provided for operation in practical production.