Abstract: In order to understand the relationship between feed nutrient level and musk quality under rough management, the musk quality of male Moschus berezovskii in a musk farm in Feng County of Baoji City, Shanxi Province before and after feed adjustment during 2008-2010 was compared. The results showed that the main nutrients of feed for male M. berezovskii in Musk secretion period were as followings： crude protein of 22.5%, crude fat of 4.8%, crude fiber of 9.1%, crude ash of 5.7%, nitrogen- free extract of 56.7%, Ca：P=1：1. After the feed adjustment, the content of muscone in musk was 3.2% （the standard muscone content/〉2.0% ）, the total ash content was 4.2% （the standard content of ash ~〈6.5% ） and the water content was 51.4% （the standard water content was 35.0% ）. The musk characteristics conformed to national musk standard in Chinese Pharmacopoeia, which indicated that the adjusted feed nutrient level could meet the nutrient requirement of male M. berezovskii in musk secretion period.