Conducting polymer was obtained by the modification of PAN4VP-Cu(II) complex with iodine in acetone, The properties such as morphology, thermal degradation, catalytic activity, and favorable conditions for preparing the conducting polymer complex were investigated. Electrical conductivity was measured by changing the concentration of cupric salts and reaction time. The experimental results are as follows : 1) The pH condition for the formation of PAN-4VP complex was in the range from 10 to 11. 2) The morphology of PAN4VP-Cu(II) complex and GuxS-PAN4VP was more compact than that of PAN4VP. 3) The catalytic activity of PAN4VP-Cu(II) complex in decomposition of hydrogen peroxide was affected by concentration of cupric salts and reaction time, and was increased with their rises. 4) Maximum value of electrical conductivity of PAN4VP-Cu(II) complex was 5.5 ${ imes}$10-5 -1cm-1 when PAN4VP-Cu(II) was modified with iodine in aetone, and that of CuxS- PAN4VP was 1.2 ${ imes}$10-5 -1cm-1 at the 40g/l concentration of cupric sulfate.