[Objectives] To deal with the challenges of the low temperatures and food shortage in winter, animals have evolved different energy strategies such as migration, molting, hoarding, fat storage and torpor, but there may be individual differences and trade-offs among strategies. Some researchers have suggested that there may be trade-offs among energetic strategies such as hoarding and torpor, etc., in Phodopus sungorus. Here we explored whether there are trade-offs among various energy strategies and analyzed the causes of individual differences in energy strategies responding to low temperature and food shortage. [Methods] Under low temperature and short light (10 ± 2 ℃, light︰dark (L︰D) = 8︰16), and ad libitum feeding or food restriction, we used TSE Lab Master system, food hoarding device and Vital View system (by G2 E-Mitter) to detect the basal metabolic rate, food intake, hoarding, core body temperature and activity of P. sungorus. Repeated-measure ANOVA, independent-sample t-test, paired-sample t-test, Fisher's exact test and Pearson correlation analysis were used to analyze differences of P. sungorus in body weight, food intake, hoarding, total intake, basal metabolic rate, core body temperature and activity. [Results] Under the conditions of low temperature and short light (ad libitum feeding), there was no gender difference in food intake (Table 1 and 2). The average body weight of males was larger than that of females (Table 1 and 2), and the core body temperature and activity of males were lower than those of females (Table 2). Some individuals expressed torpor at 40% food restriction (10 ± 2 ℃, L︰D = 8︰16). The activity of torpor individuals was higher than that of non-torpor individuals at ad-libitum-feeding stage (Fig. 4) but not food-restriction stages (Fig. 3c, d), that is, individuals with higher activity levels at ad-libitum-feeding stage were more likely to express torpor. Minimum core body temperature of torpor group was higher than non-torpor group, but tthere was no significant differencein average core body temperature at any stage (Fig. 3a, b, Table 3). There was no difference in basal metabolic rate between torpor and non-torpor individuals (Table 3). However, basal metabolic rate was negatively correlated with torpor frequency, and activity at ad-libitum-feeding stage was negatively correlated with torpor duration of torpor individuals (Fig. 1c, d, e). In the non-torpor individuals, the activity level increased significantly after dietary restriction (Table 5). In contrary to predictions, whether individuals ever hoarded food, hoarding size, or total food intake (including hoarding) did not significantly correlate with torpor. [Conclusion] Trade-offs among different energy strategies were not found between hoarding and torpor, but were found between basal metabolic rate or activity and torpor. That is, non-torpor individuals tend to decrease activity and save energy. Moreover, torpor individuals with higher basal metabolic rate, and those with higher activity at ad-libitum-feeding stage showed lower torpor expression.