The oxidant for synthesizing conductive polymer through redox polymerization is organic metal complex comprising metal ion salt with oxidizing capacity and nitride with un-shared electron pair and partial pi electron characteristic. At room temperature, the organic metal complex has weak oxidizing capacity on conductive monomer, so that its mixture with monomer has long term room temperature stability. At high temperature, the organic metal complex has moderate oxidizing polymerization capacity, so that the conductive polymer with the organic metal complex has high conductivity.