Conductive HA(Hyaluronic Acid)-doped PEDOT(Poly 3,4-ethylenedioxythiophene) particles were synthesized through chemical polymerization and an orthogonal experiment was designed to improve the conductivity of these PEDOT particles. The results show that when the experiment is conducted under conditions of HA 0.05 g, ammonium persulfate(APS) 0.015 mol and reaction time of 24 hours, the optimized conductivity measured by four-point probe can reach to 0.36 S·cm-1. A conductive biodegradable PEDOT/PLLA composite...