Abstract: The paper summarizes the significance and aim of studying PIDCVA(personifying intelligent decision-making for vessel collision avoidance),and the way of its realization.As the machine learning is the key technology to construct the dynamic anti-collision knowledge library,the mechanism of machine learning of PIDVCA theory is put forward.The integrated machine learning strategy of the PIDVCA theory and mechanism of acquiring dynamic collision avoidance knowledge are discussed by combination of collision avoidance simulation instance.