In order to investigate the mechanical parameters and failure modes of cemented filling body under different loading rates,four loading rates between 2.0 mm/min and 8.0 mm/min were utilized to develop uniaxial compressive test. The research shows that: the loading rate has an obvious strengthening effect on the peak strength and secant modulus value of the cemented filling body samples. As the loading rate increases,the peak strength and secant modulus also rise. In addition,the peak strength corresponds to the loading rates,fitting a polynomial function. And the secant modulus and loading rate meet the exponential function. Along with the increasing loading rates,the cemented filling body samples show a gradual transformation from mixed failure to the single shear failure mode. The test characteristics of the loading rate effect on the mechanical properties of cemented filling body are revealed,which provides a theoretical basis for the study of failure mechanism of filling body.