This paper was studied to the producing technology of buckwheat low-fat low sugar walnut milk,taking walnut dregs and Buckwheat power as main raw material. The parameters of processing technology were determined through orthogonal tests and sensory evaluation. The results showed that the optimal formula of buckwheat low-fat low sugar walnut milk was with 28% walnut dregs juice,1. 5% Cooked buckwheat powder,3% sucrose and2. 8% erythritol. And the product with good taste and flavor was obtained,whose best stabilizer for the beverage was 0. 05% CMCNa,0. 12% xanthan gum and 0. 08% sodium alginate.