The invention relates to the field of bearing detection methods, and particularly relates to a four-point contact ball bearing peach-shaped groove curvature radius and center eccentricity measurementand calculation method. The groove bottom diameter De, the inner auxiliary circle diameter d1 of the first rolling body and the inner auxiliary circle diameter d2 of the second rolling body which canbe easily measured can be accurately measured through assistance of two sets of non-standard rolling bodies, and then the peach-shaped groove curvature radius Re of the four-point contact ball bearingand the peach-shaped groove curvature center eccentricity Xe of the four-point contact ball bearing a can be calculated so that the measurement and calculation process is convenient, rapid and accurate and the data basis can be provided for inspection and detection of the four-point contact ball bearing.