A Langmuir-Blodgett (LB) inducing method was firstly used to prepare single layer and multilayer conducting composite PEDOT-PSS film. The application of PEDOT nanostructure to improve organic electric device performance of Organic Light Emitting Diode (OLED) was studied. Furthermore, these conducting polymeric LB films were taken as the hole transfer layer in OLED device, and an efficiency enhancement of carrier injection was observed, which was ascribed to the ordered structure of these film. However, a further investigation shows that this PEDOT-PSS film has inferior structure ability.