Abstract:Areal shot migration technique is that the wavefield extrapolation downward for downgoing waves of array source and wavefield continuation downward for upgoing waves of array records are implemented respectively for the shot records composed by timedelay decomposition and synthesis of plane waves propagating in different direction for real shot gather data,and then the imaging of reflection of plane wave in that direction is gained when both of them meet each other. Based on areal shot depth migration technique and fully using small computational effort of ray tracing and good amplitude character of wave equation wavefield continuation,the paper presented using plane wave raytracing method to compute travel times of array source downgoing wavefront of plane wave and depth migration method of areal shot wavefield time lags imaging,emphatically discussed using the Eikonal equation finitedifference to compute the propagation time of plane wave and depth imaging method of upgoing wavefield time lags of array records. The test by imaging of Marmousi model data showed the method is superior to the migration by integration method.