A conductive film includes a film body, an electrode material and a water soluble material. The electrode material and the water soluble material are disposed on the film body, and the water soluble material includes ionic compound.一種發電膜片,包含一膜片本體、一電極材料以及一水溶性材料。電極材料設置於膜片本體,且水溶性材料設置於膜片本體。水溶性材料包含離子化合物。