A low-sugar highly nutrient gluten-free bread production method belongs to the technical field of food processing. According to the low-sugar highly nutrient gluten-free bread production method, coarse rice powder and buckwheat powder serve as main raw materials, and low-sugar highly nutrient gluten-free bread is finally obtained through a series of processes of gluten-free bread moisture determination, flour paste preparation, fermentation, baking and the like. The low-sugar highly nutrient gluten-free bread production method comprises the steps of ultra-micro-pulverizing coarse rice and buckwheat and mixing the ultra-micro-pulverized coarse rice and buckwheat in proportion; adding saccharomycete into white granulated sugar after the white granulated sugar is completely dissolved in warm water for activation, and then mixing the white granulated sugar with the coarse rice powder and the buckwheat powder; sequentially adding salt, isomaltooligosaccharide, xanthan gum, sodium alginate, compound enzyme preparation (tyrosinase and laccase) and water into the mixture for mixing, performing stirring, adding sunflower seed oil into the mixture, pouring flour paste into a mold, vibrating the flour paste evenly, placing the flour paste after fermentation, cooling the bread and slicing the bread. The color of the gluten-free bread produced through the low-sugar highly nutrient gluten-free bread production method resembles whole wheat bread, and the gluten-free bread is attractive in fragrance and good in every aspect such as specific volume and viscoelasticity, has no collapse on the surface, is nutrient and healthy and is particularly to patients with the coeliac disease.