The invention discloses a lard oil fruity rice flour and a preparation method thereof. The lard oil fruity rice flour is characterized by being prepared from the following raw materials by weight: 60 to 65 parts of rice, 1 to 2 parts of dogbane leaf, 2 to 2.3 parts of platycladi seed, 1.3 to 1.7 parts of roselle, 1 to 1.2 parts of canarium pimela leaf, 1.5 to 1.6 parts of Chinese wampee leaf, 2 to 2.1 parts of green ricepaperplant pith, 2.5 to 2.7 parts of fennelflower, 20 to 22 parts of pachyrhizus powder, 10 to 11 parts of cocoa powder, 20 to 22 parts of juicy peach, 2 to 3 parts of lard oil, 10 to 12 parts of sugarcane, 35 to 40 parts of hulless oat flour, 0.5 to 0.7 part of yeast and 4 to 5 parts of a nutrition additive. According to the invention, the rice is blended with flavor of the auxiliary materials such as the juicy peach and the lard oil, the taste is unique, meanwhile, the hulless oat flour therein is high in protein content, and contains eight amino acid necessary to human body, the contained saponin and linoleic acid can effectively reduce cholesterol, besides, the lard oil fruity rice flour has the effects of calming liver, soothing nerves, lowering blood pressure, tonifying qi and nourishing heart, and the immunity of the organism can be improved when people often eat.