In the numerical simulation of rock blasting,it is very important to accurately describe the work process of expanding detonation products and to determine the parameters of JWL equation of state(Eos) quickly and accurately.A parameter calibration method of industrial explosive material is proposed which is based on ANSYS/LS-DYNA finite element software by combining theoretical calculation with numerical simulation.Taking 2# rock emulsion explosive as an example,which is common in engineering,the unknown parameters of the JWL Equation of State(Eos) were calculated by a simple algorithm according to the density and detonation velocity explosive product manual.On this basis,the numerical simulation of lead column compression experiment and lead casting reaming experiment was carried out,and the accuracy of the calculation parameters was verified by two different experiments.The influence of the changes of four important parameters A,B,R1 and R2 in JWL equation of state(EOS) on the results of numerical simulation was studied by means of orthogonal tests.After the parameter correction,the error between numerical simulation results and field experiment results was less than 5%,indicating that the calibration method was feasible.