Abstract: In order to evaluate the quality of ground roughage in Wuxi County and provide theoretical basis for its rational utilization, seven roughage samples were collected from 12 towns in Wuxi County, including 2 vines（17 potato seedlings, 8 sweet potato seedlings） and 5 straws（11 straw, 16 corn stalks, 7 whole corn plants, 11 rape straws and 9 soybean straws）.Routine nutrient content of seven kinds of roughage samplesdry matter（DM）, crude protein（CP） and crude fat（EE）, nitrogen free extract（NFE） and crude fiber（CF）, neutral detergent fiber（NDF）, acid detergent fiber（ADF） and crude Ash（Ash）, calcium（Ca） and phosphorus（P） and content of anti-nutritional factors（solanine or glucosinolate） in potato plants and rape straw were determined.The grading index（GI） of dairy cows, goats and sheep to each roughage sample was calculated and ranked.The results showed that the content of the same nutrients in seven roughages was significantly different.The content of solanine in 17 potato seedling samples was（171.3±23.5） mg/kg, and the content of glucosinolate in 11 rape straw samples was（66.79±6.82） μmol/g. The quality ranking of the main geogenic roughage samples in Wuxi County was basically the same among cows, goats and sheep.The GI values of roughage for dairy cows were potato vine（105.11 MJ/d）＞ whole corn（16.27 MJ/d）＞ sweet potato vine（11.16 MJ/d）＞ corn stover（5.76 MJ/d）＞ straw（4.27 MJ/d）＞ soybean stover（3.07 MJ/d）＞ rape stover（2.88）MJ/d).The GI values of roughage of goats were potato vine（4.46 MJ/d）＞ sweet potato vine（0.66 MJ/d）＞ whole corn（0.54 MJ/d）＞ corn stover（0.28 MJ/d）＞ rice straw（0.21 MJ/d）＞ rape stover and soybean stover（0.19 MJ/d）.The GI values of sheep roughage were potato vine（7.46 MJ/d）＞ sweet potato vine（1.10 MJ/d）＞ whole corn（0.91 MJ/d）＞ corn stover（0.47 MJ/d）＞ rice straw（0.36 MJ/d）＞ rape stover（0.32 MJ/d）＞ soybean stover（0.31 MJ/d）.The results indicated that potato seedlings were the best roughage for cows, goats and sheep, followed by whole corn seedlings（cows）/sweet potato seedlings（goats and sheep）, and sweet potato seedlings（cows）/whole corn seedlings（goats and sheep）.