PURPOSE:To obtain a grafting robot for watermelon having a stock and scion feeding apparatus provided with a member for guiding the setting directions of a stock seedling and a scion seedling in a manner to enable the grafting of watermelon directing the cotyledon of the watermelon stock and the cotyledon of the watermelon scion in the same direction, capable of increasing the cutting area of the scion and enabling correct positioning of the scion and the stock. CONSTITUTION:This robot for grafting a watermelon scion to a watermelon stock directing the cotyledon of the watermelon stock and the cotyledon of the watermelon scion in the same direction is provided with a stock-feeding plate 13 and a scion-feeding plate 14. The cotyledon back holding part 13b of the stock-feeding plate 13 and the cotyledon guide 14b of the scion-feeding plate 14 have V-shaped cross sections and the cotyledon of each seedling is guided along the V-grooves and set to correct positions.
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