Base on two cancerous samples various polarization parameter images are obtained by using three kinds of polarization imaging methods. It is analyzed that different polarization parameters′ character capabilities in different cancerous tissues and normal tissues. The results show that the polarization method can be applied to the detection of cancer. According to the physiological and optical properties of cell, the Monte-Carlo simulation using simple scattering model is carried which agrees the experiment results and shows the potential of polarization imaging in the detection of cancer.