This experiment was conducted to study the effects of dietary sulphur-amino acids level on performance and serum biochemical indices of growing meat rabbits in order to determine the appropriate level of dietary sulphur-amino acids in a certain level of digestible energy. A total of 112 young New Zealand growing meat rabbits with an average body weight of (954.24±55.61) g were randomly assigned to 7 groups with 16 replicates in each group and each replicate contained 1 rabbit. Rabbits in the 7 groups were fed experimental diets containing 0.50%, 0.55%, 0.60%, 0.65%, 0.70%, 0.75% and 0.80% sulphur-amino acids, respectively. There was a pretrial period of 7 days followed by an experimental period of 28 days. The results showed as follows: 1) the dietary sulphur-amino acids level did not significantly affect average daily feed intake (P>0.05). The dietary sulphur-amino acids level had significant influences on average daily gain and feed to gain (P<0.05). The average daily gain had the maximum value and the feed to gain had the minimum value in the group with the diet containing 0.65% sulphur-amino acids. 2) The contents of total protein and albumin in serum were not significantly affected by dietary sulphur-amino acids level (P>0.05). The dietary sulphur-amino acids level had significant influences on serum urea nitrogen and insulin-like growth factor-Ⅰ contents (P<0.05). The serum urea nitrogen content had the minimum value and the serum insulin-like growth factor-Ⅰcontent had the maximum value in the group with the diet containing 0.65% sulphur-amino acids. In conclusion, considering all indices of this experiment, the appropriate sulphur-amino acids level in the diet of growing meat rabbits is 0.65% (measured value is 0.61%).