An experiment and simnlation of solar ejector-compression combined refrigeration system were conduced, and the results of the simulation model was verified with experimental data. The influence of the generator temperature and middle-temperature on solar ejector-compression combined refrigeration system has been studied. Research shows that: with the increasing of generator temperature,it is found that the COP and the EER increase first and then decline, and the power consumption decreases first and then increases at the same time. In addition, it was seen that there exists the optimal generator temperature and the optimal middle-temperature,and the optimal generator temperature and middle-temperature are between 78 and 80℃, 7 and 10℃ over the range of research conditions respectively. The minimum total power consumption can be obtained, when the optimal generator temperature are from 78 to 80℃,and the maximun cooling capacity and EER can reach to 2 245 W,0.34 respectively when the optimal middle-temperature and from 7 to 10℃.