NOVELTY - Imparting conductivity to separator-use base member (1) of solid polymer type fuel cell made of stainless steel/titanium/titanium alloy involves spray coating and drying suspension formed by mixing conductive compound particles (3) with ethanol/water to form conductive compound particle-coated layer (2); blasting layer with blast particles to drive conductive particles coated on surface of the base member in the inside direction of the member to anchor them there; and cleaning off the conductive particles not anchored to base member and impurities on base member surface.    USE - For imparting conductivity to separator-use base member of solid polymer type fuel cell (claimed).    ADVANTAGE - The method improves conductive performance, enables production of separator-use base member at low cost with stable quality and performance without requiring complicated process and liability of distortion being caused in separator-use base member in blasting step. It is possible to easily stably control the amount of conductive compound required for making the contact resistance with carbon paper a target value.    DETAILED DESCRIPTION - Treatment for imparting conductivity to separator-use base member (1) of solid polymer type fuel cell which treats surface of separator-use base member of solid polymer type fuel cell made of any of sheet of stainless steel, titanium or titanium alloy, involves spray coating and drying suspension prepared by mixing conductive compound particles (3) of an average particle size of 1-10 mu m with ethanol or water to form conductive compound particle-coated layer (2); blasting the conductive compound particle-coated layer with blast particles having an average particle size of 50-200 mu m to drive the conductive compound particles coated on surface of base member in the inside direction of separator-use base member to anchor them there; and cleaning off conductive compound particles not anchored to separator-use base member and impurities on surface of separator base member.    DESCRIPTION OF DRAWING(S) - The figure shows step of method of treatment for imparting conductivity to separator-use base member.    Separator-use base member (1)    Conductive compound particle-coated layer (2)    Conductive compound particles (3)