Equipment battlefield repair is an important part of equipment support work. Traditional equipment battlefield repair has not met the needs of modern warfare. To improve the scientific and decision-making efficiency of equipment battlefield repair under information conditions， a generalized stochastic Petri net （GSPN） is used to model and analyze the equipment battlefield repair process， and the validity of the model is judged by invariants. According to the isomorphism characteristics of the generalized stochastic Petri net and Markov chain （ MC ）， the main performance indexes of the model are solved. Finally， through the example analysis， this method can effectively solve the main performance indexes of equipment battlefield repair， verify the validity and rationality of the model， and also provide a certain reference for equipment battlefield repair decisions.