The invention relates to the field of red plum grafting technology, and particularly to a method for grafting a red plum and a peach. The method comprises processing a red plum and a peach, choosing the red plum as a scion and the peach as a stock, inserting the red plum in the peach, and processing through a resistance nutrient solution during the grafting procedure. The grafting portion can be high in resistance to prevent the grafting portion from pathology, the cultivated variety is high in resistance, the cost for plum tree variety cultivation can be reduced, so the cost during plantation can be reduced, and the profit and economic value can be raised. The method for grafting a red plum and a peach is simple in operation, the raw material for preparing a resistance nutrient solution can be easily obtained, and a preparation method thereof is simple.