The information-based war has brought unprecedented challenges to the existing support ability of mobile medical service units in military hospitals, and combat readiness training is particularly important for improving its support ability. Combat readiness training is the main way to improve its support ability, a powerful means to improve the level of standardized management, a powerful lever to promote the development of medical equipment, a practical source to promote the theoretical innovation of medical service, a platform to test the design of medical service programs, and an inevitable measure to cultivate the spirit of combat. The above six aspects were analyzed in this paper to effectively solve the bottleneck of combat readiness training, so as to further strengthen the combat readiness training of mobile medical service units in military hospitals under the condition of information war, and improve the effect and level of combat readiness training.