Abstract: Using SD-I acoustic detector, we examine the No.15 coal seam in Shouyang block of Shanxi Province.The uniaxial compressive strength test is carried out on the MTS815 Servo-controlled Rock Mechanical Test System.We discuss the relationship between the velocity of P-wave and the coal intensity, and that between the dynamic and static elastic parameters.Test results indicate that: uniaxial compressive strength of coal and the P-wave velocity show a good exponential relationship, uniaxial compressive strength increase with the P-wave velocity; the dynamic and static elastic modulus show a good linear relationship, and the dynamic elastic modulus is usually greater than the static elastic modulus; the static and dynamic Poisson's ratio is positively correlated.