The invention provides a bearing-type damage biomechanic three-point bending test device. The bearing-type damage biomechanic three-point bending test device is characterized by comprising a base (1), a support base (2), support bearings (3), support shafts (4), a pressing head (5), a sensor (6), a connecting plate (7), a travel switch (8), a baffle (9), a baffle fixing screw (10), a support base fixing screw (11) and a dividing rule (12). The bearing-type damage biomechanic three-point bending test device provided by the invention has the advantages that a pair of support shafts and the support bearings can support a biological sample, the rolling friction is formed among the support shafts and the support base, the biological sample free bending constraint caused by the friction in a test process is reduced, the transformation of the biological sample on a supporting position is relieved, more accurate test data can be obtained, and a terminal condition more easily set in a finite element model so as to perform material parameter reverse engineering.