The interaction of cisplatin and its analogues with phospholipid molecules of hu-man erythrocyte membranes was studied using IR and  ̄31 P NMR methods. Dramatic changes were ob-served at 1300~953 cm ̄-1 frequency region on the IR spectra .Based on the IR data analysis, it was speculated that the Pt(II) complexes interacted mainly with the polar head groups of phospholipids through electrostatic interaction and certain coordination patterns. The 1 2 h dynamic experiment showed that a recoverable process occurred in case of cis-DCDP and an unrecoverable one for other pt(II)analogues.A similar conclusion could be obtained from ̄31 P NMR experimental results.The di-versity was discussed.