To provide a manufacturing method of an aluminum alloy material for press forming by which a joining can be attain with a sufficient joining strength and the press formability can effectively be enhanced in a joined material obtained by the joining.

This method includes a stage where Al-Mg-Si series aluminum alloy materials to which T4-tempering is applied or to which artificial aging treatment is applied after the T4-tempering are butted each other and the butted part is joined by friction stir welding by which a rotary tool is forced into the butted part, the butted part is stirred and joined, a stage where solution heat treatment is performed in the temperature region where is ≥450°C and not higher than a temperature T (°C) obtained by formula (1) and successively a stage where quenching is performed. The formula (1) is T(°C)=510+([Mn%]+2.5×([Cr%]+5×[Zr%]) 40 , wherein each of [Mn%], [Cr%] and [Zr%] is the mass% of each element).