This experiment was conducted to study the effects of dietary copper (Cu) and zinc (Zn) supplemental level on growth performance, nutrient digestibility and nitrogen metabolism of growing blue foxes. The experiment used a 2×3 completely randomized experimental design. Experimental diets were supplemented with 2 Zn levels (40 and 120 mg/kg) and 3 Cu levels (30, 45 and 60 mg/kg), respectively. The control group's diet was supplemented with 0 mg/kg Cu and 40 mg/kg Zn. Eighty four healthy male blue foxes at the age of (55±5) days were randomly assigned into 7 groups with 12 replicates per group and 1 fox per replicate.The pre-trial period lasted for 7 days and the trial period lasted for 75 days. The results showed as follows: 1) dietary supplemented with Cu was tended to improve the average daily gain (ADG) (P=0.06) and reduce the ratio of feed to gain (F/G) (P=0.08) of blue foxes, however, there was no interaction in ADG and F/G between Cu and Zn (P>0.05). The ADG in 30 mg/kg Cu+40 mg/kg Zn and 45 mg/kg Cu+120 mg/kg Zn groups was significantly higher than that in control group (P<0.05), but the F/G was significantly lower than that in control group (P<0.05). 2) Dietary supplemented with Cu significantly increased the digestibility of protein and fat (P<0.01). The protein digestibility in 60 mg/kg Cu+40 mg/kg Zn, 60 mg/kg Cu+120 mg/kg Zn and 45 mg/kg Cu+120 mg/kg Zn groups was significantly higher than that in control group (P<0.05 or P<0.01). The fat digestibility in 30 mg/kg Cu+40 mg/kg Zn, 45 mg/kg Cu+40 mg/kg Zn, 30 mg/kg Cu+120 mg/kg Zn, 60 mg/kg Cu+120 mg/kg Zn and 45 mg/kg Cu+120 mg/kg Zn groups was significantly higher than that in control group (P<0.05 or P<0.01). Dietary Cu and Zn supplemental level significantly affected the Cu output in faeces (P<0.01), dietary Zn supplemental level significantly affected the Zn output in faeces (P<0.01). There was no interaction in Cu output and Zn output between Cu and Zn (P>0.05). 3) Dietary supplemented with Cu significantly decreased the fecal nitrogen content (P<0.01). Dietary Cu and Zn supplemental levels had no significant effects on nitrogen intake, urine nitrogen, nitrogen retention, net protein utilization and biological value of protein (P>0.05). In conclusion, dietary supplemented with 30 mg/kg Cu+40 mg/kg Zn (total Cu and total Zn levels were 37.68 and 80.08 mg/kg, respectively) can improve the growth performance and nutrient digestibility of growing blue fox. Meanwhile, it also can reduce the nitrogen excretion in faeces.