Under the framework of elastic vector wavefield,we have derived joint velocity tomography equations and transformation between traveltime residual and depth deviation for multi-wave,and proposed a traveltime tomography method which updates velocity of P and S wave based on ADCIGs (Angle Domain Common Imaging Gathers) of image domain.The implementation can be summarized as:first,do vector wavefield migration and extract ADCIGs of elastic multi-component data based on Gaussian beam,then apply tomography inversion equations to achieve slowness update,finally obtain joint inversion result of multi-wave.Examples from model and real dataset validate this inversion method,and it can provide prestack velocity field with high quality for joint depth migration of elastic vector wavefield.