Arc welding control method

An arc welding control method that comprises controlling welding in which a material of a base material is a galvanized steel sheet, a feed speed of a welding wire is alternately switched between a forward feed period and a reverse feed period, and a short circuit period and an arc period are repeated,

• wherein during the arc period, a first arc period during which a first arc current Ia1 is applied, a second arc period during which a second arc current Ia2 is applied, and a third arc period during which a third arc current Ia3 is applied are switched over time, to control so as to be Ia1>Ia2>Ia3, wherein constant current control is performed during the first arc period, and wherein constant current control is performed during the third arc period, and
• wherein at least one of a value of a time length of the first arc period and a value of the first arc current Ia1 is determined according to a zinc deposition amount per unit area of the base material.