The invention discloses an efficient cuttage method capable of increasing the survival rate of crape myrtle. The method comprises the following steps: selecting a piece of field having the characteristics of flat terrain, convenience in road passage, irrigation and drainage, and looseness and fertility of soil along with water conservation and fertilizer conservation for serving as a piece of cuttage field; covering the cuttage field with a layer of sandy soil with the thickness of 3-10 centimeters for serving as a cuttage substrate; selecting a Y-shaped branch of over 2 years for serving as a cuttage branch, cutting at 0.2-1 centimeter away from the juncture of three branches at the bottom, leaving a longer major branch in the middle of the upper part, and cutting two secondary branches on both sides; inserting the Y-shaped cuttage branch into the cuttage substrate, inserting the two secondary branches on both sides into the cuttage substrate, leaving the major branch on the upper part, controlling the temperature at 15-25 DEG C during cuttage and keeping the moisture of the cuttage substrate at 15-25 percent; after germination, trimming the branches, and only keeping the major branch; not fertilizing from cuttage to germination, keeping the soil moisture at 15-25 percent, and keeping the temperature at 15-25 DEG C; during 7-15 days after germination, applying 500 kilograms of farmyard manure per mu, and performing management according to the conventional management method at subsequent growing periods.