This paper discusses the probability that any moving object can be the Skyline object.Two types of events are defined that will affect the P-Skyline set,by tracting and calculating those events,the P-Skyline of any time can be found out speedly.Based on the analysis,an event-based algorithm(E-CPS) is proposed to handle cotinuous probabilistic Skyline queries.The effectiveness of the algorithm is expermentally verified.