In view of the high precision manufacturing requirements of polymer injection molding with high precision, high efficiency and zero defects, the traditional process parameter setting methods and production process lack precise optimization in terms of production cycle, production cost and quality control, etc. The current intelligent response strategies and solutions of injection molding process were reviewed. For the intelligent setting of process parameters, the current mainstream research ideas were summarized from three aspects: expert system, case inference and machine learning; for the adaptive compensation of process disturbances, the current research progress was briefly described from two aspects: the agent model based on machine semester and physical model based on online monitoring. Finally, the future trend of intelligent development in injection molding industry was summarized.