Method for simultaneously harvesting flowers and fruits of dragon fruits

The invention discloses a method for simultaneously harvesting flowers and fruits of dragon fruits. The method particularly comprises the following steps: after pollinating bloomed flowers at a flowering season of the dragon fruits, cutting the pollinated bloomed flowers by virtue of a girdling method, stripping the cut flowers, and collecting for further processing the flowers of the dragon fruits; when the pollinated bloomed flowers are cut by virtue of the girdling method, reserving styles, style heads, ovaries and sepals under the ovaries, wherein in the next three to five days after the flowers are cut, the styles and the style heads wither and droop, and the ovaries are dark green, so that fruit setting is finished; and then, conventionally managing until the dragon fruits become mature. Compared with a traditional cultivation technique, the method has the advantages that the operation is simple, the fruit setting rate and the yield of the fruits are guaranteed, the income of flower harvesting is increased, and the planting income of the dragon fruits is increased.