The resting metabolic rate (RMR) of both starvation (2 weeks) and control juvenile Cyprinus carpio [body mass 10±36 ± 0.22 g, n = 88] were measured at both 15 and 25℃, respectively. The spontaneous activity indicated by fin (both pectoral and tail fins) beat frequency during movement (FBF_movement), average fin beat times during whole 10 min observation period (FBF_10min) and percent time spent moving (PTM) were measured at the same time. Both the temperature and starvation showed significant effects on RMR (P< 0.05). The RMR of starved fish exhibited a similar 19%-20% decrease compared to that of control fish at both 15 and 25℃, respectively, while the RMR of control and starved fish increase by about 80%-83% with the increase of temperature. The starvation has significantly different effect on spontaneous activity at different temperature (P< 0.05). When acclimated at 15℃, starvation treatment showed no effect on FBF_movement while it elicited a significantly lower PTM, resulting in a significantly lower FBF_10min in starved fish. However, starvation treatment showed no effect on PTM while it elicited a significantly higher FBF_movement, resulting in a significantly higher FBF_10min in starved fish acclimated at 25℃. It suggested that when undergo starvation, the juvenile C.carpio reduce its spontaneous activity to save energy at 15℃, but increase its spontaneous activity possibly for food hunting at 25℃. The different responses of spontaneous activity to starvation of fish acclimated at different temperature may be related to the richness of food resources and physiological status condition of fish in wild environment at different temperature. However, starved fish showed a similar RMR response to temperature change when compared to control fish.