To meet the demands of precise measurement of cell profile, the VirtualLab system was applied and a processing function of interfaces transmission was chosen. First, a double curve symmetrical model is designed out based on the character of red blood cell (RBC) in its shape and light scattering. In addition to this, several RBC scattering imitations are made after spherical and no-spherical models under some different light source and situation. Finally, these forward scatting patterns, scattering distribution of amplitudes and distribution of phase are all obtained with the VirtualLab system. The phase distribution in the field shows the correlation between cell′s shape, framework and situation with them. The forward scattering phase distribution of RBC is expected to become a new tool to discriminate cells.