Abstract: The experiment was conducted to optimize the formula and processing of dog dietary for teeth care. The experiment was adopted orthogonal experimental design with three factors(wheat gluten,gel,glycerol).It could be concluded that hardness of dietary varied with the proportions of wheat gluten; the supplement of glycerol could influence hardness and the appearance of dietary; supplements of gel could influence hardness and toughness of dietary. The formula of dogs dietary was made up of 35% wheat gluten, 6%gelation, 15% glycerol, 15% water, 27% puff cornstarch, 0.5% food emulsifier and others1.5%. The dog food could be processed in accordance with nature of raw material. At first, wheat gluten, cornstarch, food emulsifier and starch were mixed up, then gel was taken into glycerol, and then raw material was added water to mix up and press them into a pie. At last, the pie was put into a drying oven of 72 ℃ for 6 h.

Key words: pet food; teeth care; the formula of the prescription dietary for dog; processing technology