This experiment was conducted to study the requirements of crude protein (CP) and metabolizable energy (ME) of male China micro-duck (CMD) ducks aged from 4 to 8 weeks. Five hundred and forty healthy 19-day-old male CMD ducks with similar body weight were used in a 3×3 double factorial design trial and randomly allocated into 9 groups with 4 replicates in each group and 15 ducks in each replicate. The ducks were fed 9 experimental diets with three levels of CP (20%, 18% or 16%) and ME (12.92, 12.19 or 11.49 MJ/kg). The feeding experiment lasted for 38 days, the duration of the preliminary experiment was from 1 to 3 days and the duration of the formal experiment was from 4 to 38 days. Ten ducks per group were chosen on the basis of individual weight close to the average weight of every group on 25 days of the experiment, and the ducks were used in a metabolism trial. At 07:00 on 4 days of the experiment before feeding, one duck per group were chosen on the basis of weight close to the average weight of every group, and those ducks were slaughtered in a comparative slaughter experiment. The results showed as follows: with the increase of dietary CP level, the daily gain and the daily dry matter intake were significantly increased (P<0.05 or P<0.01), and the ratio of feed to gain was significantly decreased (P<0.01); with the increase of dietary ME level, the daily gain was significantly increased (P<0.01), and the ratio of feed to gain was significantly decreased (P<0.01); the interaction between dietary CP and ME levels was significant in the growth performance (P<0.01); with the increased level of dietary ME level, the availability of gross energy was significantly increased (P<0.05); the interaction between dietary CP and ME levels was significant in the availability of nitrogen and gross energy (P<0.01); the deposition rates of ME or CP were significantly increased with the increase of dietary CP or ME levels (P<0.05 or P<0.01); the interaction between dietary CP and ME levels was significant in the deposition rates of CP and ME (P<0.01). The results suggest that for the male CMD ducks aged from 4 to 8 weeks, the daily maintenance requirements of CP and ME are 10.667 g/kg W^0.75 and 796.196 kJ/kg W^0.75, respectively; the calculation formulas of daily requirements of CP and ME are CP=10.667W^0.75+0.117△W and ME=96.196W^0.75+3.880△W (W^0.75 means metabolic body weight and △W means daily gain), respectively; the dietary levels of CP and ME are 17.57% and 11.87 MJ/kg, respectively.