To provide a method for detecting a grease feed capable of properly judging whether the grease feed is preformed or not to an individual grease feed part.

In this constitution, a grease feed detection device 1 concurrently provided with a grease feed function and a grease feed detecting function is mounted directly in or in an adjacent position in a part where grease must be fed, so as to make a display by transmitting a detection signal of a grease feed to a display device in the outside, simultaneously with feeding grease from the grease feed detection device 1 to the part where grease should to fed.