Abstract: [Objective] To evaluate the nutritional components of a fermented mixed feed prepared with forage mulberry powder （at a 15% ratio） and corn stalk, and to assess the effects of feeding this fermented mixed feed on intake, growth performance and apparent nutrient digestibility in lambs. [Method] A total of 100 3-month-old healthy weaned lambs were selected and were randomly divided into 5 groups, including experimental groups Ⅰ, Ⅱ, Ⅲ, Ⅳ and a control group. There were 20 lambs for each group, and there was no significant difference in initial body weights of the lambs between different groups （P>0.05). The control group was fed a basal diet, and the experimental groups Ⅰ, Ⅱ, Ⅲ and Ⅳ were fed a basal diet supplemented with 15% fermented mixed feed （containing 15% forage mulberry）, 15% fermented corn stalk, 15% forage mulberry, and 15% corn stalk, respectively. The experimental period lasted for 45 days. [Result] Comparing fermented mixed feed with fermented corn stalk and forage mulberry, no significant differences in contents of DM, Ash and EE were observed （P>0.05）, while significant differences in contents of total amino acids and CP were observed （P<0.05）;there was significant difference in content of CF between fermented mixed feed and forage mulberry （P<0.05）; comparing fermented mixed feed with fermented corn stalk and forage mulberry, significant difference in content of NDF was observed （P<0.05）; there was significant difference in content of ADF between fermented mixed feed and fermented corn stalk （P<0.05）. The experimental group Ⅰ had significantly increased feed intake compared to the experimental groups Ⅱ, Ⅲ, Ⅳ and the control group （P<0.05）; significantly higher values of individual average weight gain, average daily gain, roughage intake and feed conversion rate were observed in the experimental group Ⅰ compared to the remaining groups （P<0.05）; no intergroup difference in the apparent digestibility of DM and EE was found （P>0.05）; there were significant differences in apparent digestibilities of NDF, ADF, Ca and P between the experimental group Ⅰ and the other groups （P<0.05）. [Conclusion]The fermented mixed feed