Abstract: In this paper, a new construction type of membrane electrod——binetwork membrane electrode is suggested, whose catalyst layer is interconnectively composed of catalyst network of Pt/C coated with thin Nafion film having high gas diffusibility and the electrolyte network of carbon coated with thick Nafion film having high proton conductivity. The producing process and conditions of membrane electrode are optimized. The sample of binetwork membrane electrode with 5 cm2 area and 0.1 mg/cm2 Pt contain is obtained.