Abstract: In order to enrich the kinds of tartary buckwheat food,the composite nutrition powder of germinated tartary buckwheat and peanut protein was developed,using germinated tartary buckwheat flour and peanut protein flour as the main raw material,where soluble soybean polysaccharides( SSPS) and other auxiliary material were added.The baking temperature and time,particle size of tartary buckwheat flour and the ratio of raw and supplemental materials were studied by single factor experiments and sensory evaluations,caking rate and moisture holding capacity were evaluated,on the basis of which,the ratio of raw and supplemental materials were optimized by orthogonal design. The results indicated that the optimal formula of composite nutrition powder was obtained: baking parameter of germinated tartary buckwheat flour with temperature 130 ℃ and time 45 min,germinated tartary buckwheat flour with size of 80~100 mesh,the optimal formulation of composite nutrition powder with germinated tartary buckwheat flour,peanut protein flour,SSPS,milk powder,xylitol and β cyclodextrin of37.48%,9.37%,3%,25%,25% and 0.15%,respectively.The composite nutrition powder had better flavor and high nourishment with 24.62 mg /100 g DW of GABA content for this formula.