The military scientific information research institution is an important foundation for supporting and serving military scientific research.This paper defined the concept of military scientific information research institutions capability generation,analyzed the influencing factors of military scientific information research institutions capability generation based on niche theory,expound the relationship among the influencing factors,and on this basis,construct the dynamic change model of the military scientific information research institutions capability generation based on Markov stochastic process,And give a case to study.The conclusions provide reference for improving the capability of military scientific information research institutions.