Equipment maintenance method and device

An embodiment of the invention provides an equipment maintenance method and device. The equipment maintenance method comprises the following steps: acquiring a judgment matrix for representing an importance relation among a plurality of factors which are used for representing the health condition of equipment; constructing an evaluation model according to the judgment matrix; and determining the life cycle of the equipment based on the evaluation model and historical data corresponding to the plurality of factors. According to the embodiment of the invention, the evaluation model is constructed, the health values (wherein different health values represent the state life cycle stages of the equipment) of the medical equipment are quantitatively evaluated and determined, the attributes of the equipment in different state life cycle stages are comprehensively evaluated and are divided into a plurality of levels, and targeted preventive maintenance measure plans and dynamic management arecustomized, so actual req