The invention discloses a formation foil and a production process thereof. The production process of the formation foil comprises the steps of aluminum foil pretreatment, formation of first to third stages, baking, formation of the fourth stage, curing, drying and the like. In the formation process, all the used formation liquids are a boric acid solution, and the formation liquids of first to fourth stages are at a certain temperature, and the concentrations of the liquids are increased gradually; all the formation processes are performed in a direct current electric field; and curing is performed in an ammonium dihydrogen phosphate solution or a mixed solution of ammonium dihydrogen phosphate and phosphoric acid. The production process of the formation foil is simple and the production cost is greatly lowered; in addition, only two or three kinds of solutions are adopted in the production process, so that the production process is environment friendly. In addition, the formation foilprepared by the process can be subjected to surface cleaning, so that continuous utilization is not influenced when the surface is contaminated.