Abstract:The bending strength and fracture toughness of sintered NdFeB alloy are tested using a Zwick mechanical properties measure machine. The zero plastic energy in bending procedure shows the brittle characteristic of this kind of material. The Single-Edged-Notch-Bend (SENB) test for its fracture toughness also has the burden of polishing sample. So indentation microcracking is implemented as a simple evaluation method for the fracture toughness of sintered NdFeB alloy. In order to make the experiential parameters reliable in the relation of HV-KIC for Palmqvist crack system, HV and series indentation parameters such as P, a, l are measured to do the regression analysis of fracture toughness that is obtained by SENB test on a notched sample.