The invention discloses a method for processing before scion grafting of plum blossom. The method includes the steps of scion shearing and scion soaking, and is characterized in that a scion is takenout of a storage chamber, wax sealing parts of the two ends of the scion are sheared off by a pair of shears, 500-750-fold indolebutyric acid naphthylacetic acid is prepared to serve as a soaking liquid medicine, the sheared scion is soaked in the soaking liquid medicine to be soaked for 10-12 hours, the scion soaked in the liquid medicine is taken out to be flushed with clear water, and then thescion is soaked in clear water to be soaked for 6-10 hours. By means of the technical scheme, plant cell differentiation can be promoted, the cell viability of the plum blossom scion is enhanced, celldifferentiation of the plum blossom scion is promoted, the growth and development of a healing part of the scion and a stock are accelerated, the sprouting growth of the scion is facilitated, the growth amount is increased, and the grafting survival rate is greatly increased by 20% or more. The plum blossom scion can be active in cell division, strong in stock-scion affinity, rapid in healing, early in sprouting and rapid in growth after being grafted.