The invention provides a metal component surface plastering structure and method. The plastering structure comprises a metal component, a first layer of an epoxy resin cementing agent, a glass fiber mesh, a second layer of the epoxy resin cementing agent, coarse and sand and mortar, wherein the surface of the metal component is coated with the first layer of the epoxy resin cementing agent, the glass fiber mesh is pressed into the first layer of the epoxy resin cementing agent, the glass fiber mesh is coated with the second layer of the epoxy resin cementing agent, the coarse sand is bonded inthe second layer of the epoxy resin cementing agent, and the mortar is arranged on the outer surface of the coarse sand. The epoxy resin cementing agent comprises epoxy resin, a curing agent, a diluent and polyamide resin, the weight ratio of the epoxy resin, the curing agent, the diluent and the polyamide resin is 1:0.25:0.5:0.2. According to the metal component surface plastering structure andthe method, the bonding force between the metal component and the mortar can be improved, the mortar and the metal component can be combined into a whole, an integrated effect can be formed with the surface of a surrounding wall, and the aesthetic property of a building can be improved.