Psoriasis is a kind of chronic relaptic skin disease, and at present there are no appropriate therapeutical methods. From March 1998 to May 1999, we used the traditional Chinese and western medicine (TCM-WM) approach in treating this disease, and satisfactory result was obtained. We clinically observed this method in treating psoriasis, with hemorrheological examinations performed, and it is reported as follows. METHODS Diagnostic Standard According to the diagnosis standard in “Modern Dermatology” (chiefly edited by YANG Guo-liang, WANG Xia-sheng. Shanghai: Shanghai Medical University Press, 1996∶513-514), the patients were confirmed to suffer from psoriasis vulgaris; and according to TCM syndrome differentiation as blood stasis type.