The invention belongs to the field of functional polymer composite material, which relates to a multi-layer perfluorinated cross-linking adulterated ionic membrane compounding micro-porous membrane and fiber. The ionic membrane is a multi-layer membrane with 2-40 layers formed by perfluorinated ion exchange resin with the EW value of 600-1300, wherein at least one layer has a cross-linking reticular structure, at least one layer is a reinforcing membrane with the micro-porous membrane being a reinforce, at least one layer is added in an anorganic adulterant with functions of water holding andproton exchange, at least one layer is added in the fiber as the reinforce, and at least one layer is added in high valence metallic compound and at least one layer is added in the fiber as the reinforce; and the multi-layer perfluorinated cross-linking adulterated ionic membrane adopts the methods comprising the cross linking of the micro-porous membrane, the reinforcing fiber and the chemical bonding, the physical exchange cross-linking of high valence metallic compound and acid exchange base group and the like, simultaneously the mechanical strength of the ionic membrane is greatly increased, and due to the existence of the transmitter substance of adjuvant proton, the electric conductivity of the obtained membrane under high temperature or low humidity is far higher than the electric conductivity of common ion exchange membrane.