Abstract: 【Objective】 In order to guide the ruminant livestock farms in Xinjiang to scientifically suppress whole-plant silage corn. 【Methods】 A total of 103 silage samples were collected from 9 prefectures(city) from 2019 to 2021, and 13 indicators such as dry matter, crude protein and ash in the samples were determined by near-infrared detection method, and the net maintenance net energy (NE_m), net energy for lactating cows (NE_L) and net energy for weight gain (NE_g) were calculated. According to the evaluation method of whole plant silage corn grade, the production level and optimized process of whole plant silage corn in Xinjiang were analyzed. 【Results】 (1) The pH value of the whole plant silage corn was controlled below 4, the content of lactic acid (LA) accounted for a high proportion of DM, and the anaerobic fermentation was sufficient to achieve the purpose of long-term preservation. (2) 33.33%, 44.44% and 22.22% of the whole-plant silage corn in different prefectures had good, medium and pass nutrient rating, respectively. The content of DM in silage was low, and the contents of CP, NDF and ADF were high. (3) There was no significant difference in Ca and P content, NE_m, NE_L and NE_g in silages from different areas. 【Conclusion】 The pH value of whole-plant corn silage pressed in various prefectures (city) of Xinjiang is below 4.0, and anaerobic fermentation fully achieve the purpose of long-term preservation. However, according to the evaluation criteria of silage corn, it is not excellent. Considering the dry matter content of silage corn, it is recommended to delay the harvest of silage corn for 5-10 days.