<p>The transient electromagnetic field governed by the diffusion equation can be transformed to a pseudo-wavefield through a mathematical transform. As the result of the wavefield transform, the pseudo-wavefield has the advantage in locating the subsurface targets. Unlike the electromagnetic or seismic waves, the pseudo-wavefield possesses some uniqueness in its propagation rules and features. Thus, the corresponding research and analysis are necessary. To simulate the pseudo-wavefield, the forward modelling studies of the pseudo-wavefield has been done. In this paper, an explicit finite difference scheme with the Yee grid and Complex Frequency Shifted Perfectly Matched Layer (CFS-PML) is conducted, so that to model the response of the pseudo-wavefield generated by the differential pulse function. Through the results of the forward modelling, it is found that the propagation velocity of the pseudo-wavefield is slower than the transient electromagnetic field. The Hx, Hy and Hz components of the pseudo-wavefield is more sensitive to the conductive objectives than the Ex or Ey components. Through the modelling of the subsurface water-bearing bodies, a better resolution has been found in the pseudo-wavefield responses. Based on our results, the pseudo-wavefield could be used to detect and located the electric interfaces of the subsurface objectives with fine conductivity.</p>