Abstract: In view of problems of lag and lack of ability of early failure prediction of traditional fault diagnosis methods of winch, a health diagnosis system of coal mine winch based on information fusion was designed. The system takes LabVIEW software as development platform, it uses sensors to collect vibration signals of the winch, and obtains basic probability assignments through calculation to extract characteristic signals; then adopts D-S evidence theory to fuse information, and determines whether the winch is running properly according to fusion rules. The test result shows feasibility of the system.