Abstract: The porous polyurethane (PU) elastomer with a controllable pore size was prepared by a concentrated emulsiontemplating technique.Acidtreated multiwalled carbon nanotubes (MWCNTs) as a conductive additive were added into the elastomer to obtain a type of pressuresensitive conductive porous PU composites.The effects of contents of emulsifier and castor oil on the morphology of the composites were investigated.The results indicated that the average pore size decreased with an increase of emulsifier content, and the microsized pores were found to deform and deviate from a circular shape as the content of castor oil became higher.The addition of MWCNTs imparted the composites with a pressuresensitive conductive property.Furthermore, the electrical resistance of the composites decreased by two orders of magnitude with an increase of MWCNTs content.Meanwhile, the electrical resistance of the composites also decreased by two orders of magnitude with an increase in external pressure.