This experiment was conducted to study the requirements of metabolizable energy (ME) and crude protein (CP) of black male Muscovy ducks aged from 4 to 7 weeks. Three hundred and twenty four 21-day-old black male Muscovy ducks were used in a 3×3 factorial design trial and randomly allocated to 9 groups with 6 replicates per group of 6 ducks in each replicate. The ducks were fed 9 experimental diets with different levels of ME (11.30, 11.72 or 12.13 MJ/kg) and CP (15.0%, 17.0% or 19.0%). The experiment lasted for 28 days. The ducks’ excrement in each replicate was collected for 2 days at the end of the experiment and used for analyzing energy. One duck from every replicate was slaughtered at the end of the experiment, and samples were collected for analyzing body composition. The results showed as follows: 1) dietary ME level had significant effects on average daily feed intake (ADFI), feed/gain (F/G), living body CP content and CP intake (P<0.05). Dietary CP level had extremely significant effects on intake and deposition rate of CP (P<0.01). The interaction between dietary ME and CP levels had significant effects on living body water and energy content, and deposition rate of ME (P<0.05). 2) Through unary linear regression analysis, the ME and CP requirements could be estimated by the following formulae: ME=1 285.39W^0.75-4.21△W;CP=0.81△W-8.92W^0.75 (W^0.75 was metabolic weight, and △W was ADG). The ME and CP requirements of black male Muscovy ducks aged from 4 to 7 weeks are 11.71 MJ/kg and 17.64%.