To provide a renewal method and a renewal structure for an existing bearing apparatus.

In this renewal method for the existing bearing apparatus, the existing bearing apparatus on a lower structure 4 is removed, and a new bearing apparatus is installed. A groove 15 not chipping an internal reinforcement bar 14 of an existing concrete beam 1 is provided in a side surface 12 or a lower surface 13 of the existing concrete beam 1, an engagement metal fitting 24 is provided on the existing concrete beam 1 so that a projection 22 in the engagement metal fitting 24 having the projection 22 fitted to the groove 15 is fitted to the groove 15, and the existing concrete beam 1 is supported on a new bearing apparatus 21 through the engagement metal fitting 24.