The invention discloses a dragon fruit 
grafting method which comprises the following steps: I, selecting varieties of a 
rootstock and a scion; II, performing 
rootstock treatment, namely 
cutting a section of a 
plant twig as the 
rootstock, 
cutting off mesophyll tissue at the root part of the rootstock, exposing wooden white vascular bundles which are base parts of the rootstock, and 
cutting a stair-shaped 
grafting hole of which the 
cut surface is flat on the 
ridge of a rootstock stem; III, performing double-
bud scion treatment, namely cutting a scion with double buds, wherein the 
cut part of thescion takes the shape of a 
Chinese word Ao and has a size corresponding to that of the 
grafting hole; IV, performing grafting treatment, namely aligning the 
cut part of the scion to the grafting holeof the rootstock, pressing the scion till the cut part is completely fitted to the grafting hole, and performing bundling and fixing, so as to obtain a grafting 
seedling; and V, performing grafting 
seedling culture, namely inserting the base part of the rootstock of the grafting 
seedling into soil, and performing culture, wherein it means grafting succeeds after the rootstock has roots and scionbuds germinate. The 
grafting method disclosed by the invention is high in 
survival rate, rapid in grafting speed and small in 
workload, the grafting time can be shortened, and the yield and the growthspeed of a scion dragon fruit variety can be effectively increased.