Bearing vibration is affected by many factors, and the identification of its influencing factors belongs to the problem of poor information. It is difficult to draw a convincing conclusion by using a single method to analyze. In this paper, a new method is proposed based on the principle of qualitative fusion. The influencing factors of the bearing vibration are comprehensively analyzed by combining membership degree, close degree and gray correlation degree, and then the representative main influencing factors of bearing vibration are obtained.