A component life prediction method that makes it possible to enhance, when predicting a time at which a component provided in an apparatus reaches its life end, the accuracy of this prediction. A method of predicting the life end of a component provided in an apparatus. An operation state of the apparatus is determined, which can reduce the service life of the component. A remaining useful life is predicted in which the component can be used until the component reaches the life end. Cumulative time is predicted which is determined by accumulating time in the operation state. A time at which the component reaches the life end is predicted based on a result of predicting the remaining useful life and a result of predicting the cumulative time.