The invention discloses a monitoring-expert-knowledge-base-based warning signal processing decision-making suggesting method. The method comprises: S1, carrying out word splitting on a processing decision of a monitoring expert knowledge base and generating a decision feature item; S2, carrying out word splitting on an equipment monitoring warning signal and generating a warning signal feature item; S3, establishing vector space models for the decision feature item and the warning signal feature item and calculating a similarity degree between the decision feature item and the warning signal feature item based on a vector space model; and S4, according to the similarity degree, displaying a processing decision corresponding to the equipment monitoring warning signal. With the method, the burden of the monitoring staff can be reduced effectively; practicability of the monitoring expert knowledge base is improved; and accuracy and timeliness of the equipment monitoring warning signal processing are guaranteed.