Aluminum alloy brazing sheet and method for producing the same

An aluminum alloy brazing sheet for brazing aluminum in an inert gas atmosphere without using flux, the brazing sheet comprising a core material and a filler metal, a first side or the first side and a side opposite to the first side of the core material being clad with the filler metal, the core material being formed of an aluminum alloy that includes 0.2 to 1.3 mass % of Mg, with the balance being aluminum and unavoidable impurities, the filler metal including 6 to 13 mass % of Si and 0.004 to 0.1 mass % of Li, with the balance being aluminum and unavoidable impurities, a surface oxide film having been removed from the brazing sheet, and an oil solution that decomposes when heated at 380° C. or less in an inert gas having been applied to the brazing sheet, wherein the decomposition temperature of the oil solution is 200-380° C. and the application amount of the oil solution is at least 500 mg/m2.