The invention discloses a cultivation method free from artificial pollination for a small-fruit seedless watermelon facility. Bottle gourd is selected as grafting stocks, and small-fruit seedless watermelon and seed watermelon are used as grafting scions; and female flowers of the small-fruit seedless watermelon are pollinated using pollen, collected by vector insects, of the small-fruit seed watermelon, or pollinated using anemophily. Wilt can also be prevented and controlled using the advantages of vigorous growth and strong disease and stress resistance of bottle gourd roots after pollination. The method is a cultivation fruit-setting method free from artificial pollination for a small-fruit seedless watermelon facility, can completely replace the traditional artificial pollination method, reduce the input of labor and reduce the cost, simultaneously is high in fruit-setting rate and strong in anti-aging capability of plants, increases the weight of single fruits, improves the yield, and realizes excellent quality.