Abstract: In order to better grasp the quality status of the whole-plant corn silage in Yunnan Province,samples were collected from seventeen grain to forage pilots distributed in five prefectures and their quality was comprehensively assessed by using sensory evaluation and laboratory analysis methods.Generally,the tested whole-plant corn silage samples showed good fermentation quality.Thirty-one and seven samples were comprehensively evaluated as top-graded and well-graded,respectively,accounting for 79.49% and 17.95% of the total number of samples,respectively.There was only one sample considered as poorly-graded,accounting for 2.56%of the total number of samples.Meanwhile,some existing problems in whole-plant corn silage production in Yunnan Province are also observed,such as the harvest time of whole-plant corn is too early,the silage production technology needs to be improved,and the selection of silage corn varieties needs further optimization.