Polysilane copolymers with disiloxane pendant groups were prepared from methylphenyldichlorosilane and pentamethyldisiloxypropylphenyldichlorosilane as a comonomer by Wurtz coupling. Disiloxane pendant groups were accumulated at the surface of copolysilane films, which was evidenced by XPS analysis. Photoconductivity of these copolysilanes by Xerographic discharge measurement was not much affected by the disiloxane groups.