Scientific business strategymaking plays a quintessential role for companies to improve their core competitiveness. Current models on corporate competition and strategies, such as the classic Porter’s Five Forces model, focus on the static market behavior in a certain horizontal dimension, instead of dynamically analyzing the panoramic environment of market competition and management decisionmaking process. Therefore, we innovatively incorporate the dynamic decisionmaking logic of military OODA model into Five Forces model, and construct a corporate strategic decisionmaking model based on the abovementioned two models. We discuss relevant applications of the new model and corresponding decisionmaking behavioral patterns of corporate management with a hope to provide a new theoretical method and practical approach for companies to occupy the dominant position in the future market.