The influence of different sample preparation methods on CRI and CSR was studied.The experimental results show that due to different sample preparation methods, the shape of the prepared samples and the surface structure and specific surface area of spherical and bulk samples are different,which makes the reactivity value of mechanical sample spherical sample higher than that of manually-prepared sample,and the strength of spherical sample after reaction is slightly lower than that of block sample.The particle size of the sample also affects the CRI and CSR in a certain range.