The invention relates to a fault judging method, device and system for ship machine equipment, and a storage medium. The fault judging method comprises the steps that state information, sent by collecting equipment, of a plurality of test points on the ship machine equipment is obtained; the multiple test points are set according to the fault form of the ship machine equipment; the collecting information is used for receiving source information, collected by sensors, of the test points, and the state information of each test point is obtained by the source information collected by one or moresensors; a data processing mode corresponding to each test point is determined; the state information of each test point is subjected to data processing through the corresponding data processing mode,and thus state characterization data of each test point of the ship machine equipment are obtained; the degradation speed of each test point of the ship machine equipment is determined according to the state characterization data of each test point; and according to the degradation speed of each test point, whether the ship machine equipment is faulted at the prediction time or not and the faultoccurring form are predicted. According to the fault judging method, the specific fault occurring form of the ship machine equipment at certain moment can be automatically predicted, and the state prediction accuracy rate of the ship machine equipment is effectively increased.