Elastic wave field separation numerical modeling has been an important means to study the propagating rule of pure

compress wave and pure shear wave of the hybrid elastic wave field. The general method is achieved by the operator separation,

which not only increase the computed memory, but also waste a lot of computed time. Thus we put forward a new elastic wave field

separation numerical modeling scheme base on divergence and curl, which is only depended on staggered grid to compute the

divergence field (compress wave) and curl field (shear wave), so the computed efficiency is greatly improved. Perfect Matched

Layer (PML) absorbing boundary condition is used to weaken the reflection wave from the boundary. The numerical result shows that

this method can correctly and quickly separate pure compress wave and pure shear wave from hybrid wave field with high precision,

good boundary absorption, and the numerical process is stable, so it can be used to guide multiwave multicomponents seismic

datum processing, and also point out that the method has difficulty to separate the coupled wave type such as surface wave.