The invention relates to a multi-ship encounter collision prevention method for a dynamic searching intelligent ship. The multi-ship encounter collision prevention method comprises the steps of: S1, acquiring current position information, revolution angular speeds, ship speeds, ship lengths and ship motion conflict radii of the present ship and a plurality of coming ships; S2 acquiring a positionset of the coming ships as well as navigational speed and revolution angular speed ranges of the present ship at a next moment; S3, acquiring a predicted navigational point set through combining the navigational speed and the revolution angular speeds; S4, acquiring a distance evaluation function value of a predicted navigational point and the coming ships; S5, determining whether a brake distanceof the present ship is less than the distance evaluation function value, if so, recording the predicted navigational point, otherwise, activating emergent brake of the present ship; S6, and calculating an overall evaluation function value of the recorded predicted navigational points, acquiring the optimal navigational speed and the optimal revolution angular speed, and returning to the step S1 until reaching a target point. The multi-ship encounter collision prevention method combines with a ship moving boundary, can stop the ship for treatment in an urgent situation, effectively guaranteesthe safety of the intelligent ship, selecting collision prevention and navigation resume according to the evaluation function, and is high in reliability.