This experiment was conducted to study on the effects of the content and acid binding capacity (ABC) or pH of ingredients on the ABC or pH of calves starter ration. Nine feed raw ingredients which were ordinarily used in the northern China were chosen, and mixed to calf starter rations based on L27(313) orthogonal test table. The ABC and pH of the ingredients and starter rations were determined, and then multiple regression method was used to analyze the data. The results showed that, 1) the ABC of limestone was highest, meanwhile that of NaCl was lowest, and the order of ABC from high to low was soybean meal, wheat bran, corn in plant feed ingredients; 2) the pH of mineral ingredients was alkaline, and that of corn, wheat bran and soybean meal was 5.65 to 5.92. The pH of the vitamin premix and mineral premix were very low; 3) all the ingredients had significant effects on the ABC and pH of starter ration （P<0.05）. These results indicated that in the range of the experiment design, the suitable contents of ingredients in calves starter ration were: soybean meal≤20%, wheat bran 0～10%, whey powder≤20%, CaHPO4≤2%, limestone≤2%, NaCl 0～1.0%, vitamin premix 0～0.04% while the optimum ABC of calves starter ration was destined for 20～25 mmol/100 g. There was significant multiple liner correlation between the ABC or pH of calves starter ration and content, ABC or pH of ingredients.［Chinese Journal of Animal Nutrition, 2010，22（1）:63-69］