Abstract: The present application discloses a conductive membrane and a preparation method thereof, which belong to the field of membrane separation technology. The conductive membrane provided by the present application includes a porous base layer film, a porous intermediate layer film, and a porous conductive layer film which are disposed layer by layer in sequence; wherein at least some holes of the base layer film are communicated with holes of the conductive layer film through holes of the intermediate layer film, and material of the intermediate layer film is the same as material of the base layer film and of the conductive layer film. Regarding the conductive membrane provided by the present application, it can be coupled with electrochemical technology, so that the membrane exhibits new excellent properties at the same time of playing separating characteristic.