In order to measure different life-cells with more scattering information of hologram, light propagation models of red blood cell (RBC) and white blood cell (WBC) are built based on their optical characters and the digit holograph function of the VirtualLabTM imitation system. The distributions of cells, scattering phase and their intensity are achieved after using this virtual imitation experiment system according to the digit phase microscopy (DPM) method and its experimental parameters. These distribution characters are studied and it is found that the phase distributions can be used as an important criterion for testing cells, distribution because of their relationship. Comparing the 3-D building method, this cell-constructing method based on the phase analysis needs fewer confine condition and less counting. It provides a breakthrough for developing cell’s measurement in technique and method.