Abstract: Velocity analysis is a key step in data processing and interpretation Though traditional velocity analysis that is based on isotropy assumption has been widely used, anisotropic velocity analysis is required to tackle the anisotropy of real data and to provide velocity for anisotropic imaging Dual parameter velocity scan was implemented on synthetic and real data for P-waves in VTI media For real data of relatively low resolution, super gathers were firstly generated, and then crosscorrelation velocity spectrum analysis was carried out for signals This method can extract P-wave anisotropic parameters and NMO velocity from P-wave traveltimes, as well as generate curves or slices of P-wave anisotropic parameters along reflecting interface