In this study, we investigated the effect of drought on the germination characters of Caragana korshinskii Kom seeds under different temperature conditions. We carried out an experiment with 5 different constant temperatures (10℃, 15℃, 20℃, 25℃, and 30℃) controlled by artificial climate incubators and 7 simulated drought stress conditions created by different polyethylene glycol (PEG)-6000 concentrations (0%, 5%, 10%, 15%, 20%, 25%, and 30%). The results revealed that temperature, simulated drought stress by PEG, and their interaction had a significant impact on the germination percentage (GP), coefficient of germination rate (CGR), germination value (GV), germination index (GI), and vigor index (VI) of C. korshinskii Kom. seeds (P < 0.01). Seeds at 15℃ showed the maximum GP that was significantly higher than that of seeds at 10℃ (P < 0.01) and declined gradually as the temperature increased. CGR decreased (i.e., acceleration of germination schedule) with increasing temperature and a significant increase was identified at 30℃. The highest GV and GI were detected at 25℃ and 20℃, respectively, but both of them declined significantly with continued temperature increasing (P < 0.05). VI decreased with increasing temperature and a significant difference was detected among all treatments at different temperatures (P < 0.05), except for that between 10℃ and 20℃. The relationships between GP, GV, GI, and PEG concentrations at 15℃ were insignificantly negative, while the negative correlations were significant at all other temperatures (P < 0.05) and the correlation coefficients maximized at 25℃ or 30℃. It was found that CGRs were positively correlated with the concentration of PEG at all temperatures. A significant negative correlation between VI and PEG concentration was identified and the correlation coefficient increased with increasing temperature. The regression models of germination parameters and PGE concentrations presented cubic curves, quadratic curves, and linear model and all models were significant (P < 0.05). Below 20℃, lower concentration of PEG partly facilitated the germination of C. korshinskii Kom. seeds. The highest tolerance of seed germination to simulated drought stress of PEG was detected at 15℃. The germination pattern of C. korshinskii Kom. seeds to temperature and drought stress could be the result of long-term adaptation and evolution to the conditions of its natural distributing region.