The elastic parameters of dry and saturated carbonate samples from the same reservoir at quasi-static and ultrasonic frequencies were measured in the laboratory. The wave velocity and elastic modulus characteristics were studied. The results show that in addition to the differences in loading frequency,there are different strain differences in the static measurement and dynamic measurement range.The wave velocity of carbonate samples decreases with porosity increasing.The wave velocity ratio in saturated samples has more dispersion effect with the increase of porosity.Complete saturation of the pore space with water causes an increase and decrease in compressional and shear wave velocity as well as significant changes in the shear modulus.The observed shear weakening indicates that a rock-fluid interaction occurs with water saturation.