The experimental tests for limestone specimens at 700 ℃ in uniaxial compression were carried out to investigate the mechanical effects of loading rates on limestone by using a MTS810 rock mechanics servocontrolled testing system considering the loading rate as a variable.The mechanical properties of limestone such as the stress-strain curve,variable characteristics of peak strength and the modulus of elasticity of limestone were studied under the strain rates ranging from 1.1 × 10-s to 1.1 × 10-1 s-1.(1) Sharp decreases were shown for the peak strength and elastic modulus of limestone from 1.1 × 10-5 to 1.1 × 10 4 s-1 at 700 C as well as a downward trend was shown from 1.1 × 10 4 to 1.1 × 10-1 s-1with the rise of the strain rate.(2) The peak strain increased from 1.1 × 10-5 to 1.1 × 10-4 s-1,however,there was no obvious changes shown for the peak strain of limestone from 1.1 × 10-4 to 1.1 × 10-1 s-1.These results can nrovide valuable references for the rock blasting effect and design of mine.