Low intensity millimeter(6mm,50GHz,100mW) wave was used to irradiate to 15 blood samples. The radiation time respectively were 15min、30min and 60min.Series rheological and biophysical parameters about the erythrocyte were systemically tested. There included viscosity of blood 、deformability and congregating ability of erythrocyte、hemolysical fragility 、anion transport in erythrocyte membranes and configuration of erythrocyte etc. From the point of biophysics, the biological effects of low intensity MMW to cells were investigated.