Effect of temperature (0~30 ℃) on the oxygen uptake rate and ammonia excretion rate of Calanus sinicus were determined through incubation experiments. The average dry body weight of C. sinicus was 110 μg. The relationship between oxygen uptake rate (R) and temperature (T) was expressed as R = 0.028 3 ×T + 0.065 3. The relationship between ammonia excretion rate (A) and temperature was expressed as A = 0.015 5 e0.075 2T.