Yam is rich in yam polysaccharides,which has a certain regulation efficacy on blood sugar for diabetes patients.Based on the previously study of the low glycemic index steamed bread for diabetes patients,the formula was adjusted and optimized with addition of fresh yam pulp.The best ratio of the steamed bread was:sorghum powder 31.35%,wheat flour 31.35%,wheat gluten 5.95%,yam pulp 23.75%,antioxidant (vitamin C) 100 mg/kg,α-amylase 30 mg/kg,CMC-Na 0.08%,xanthan gum 0.3% and yeast 0.6%.After detecting,the glycemic index was 54.98，which showed that this kind of steamed bread is in low GI and suitable for diabetics in daily.