This laser welding method has a first step and a second step. In the first step, a first workpiece and a second workpiece are overlaid in a first work area. In the second step, the first workpiece and the second workpiece are irradiated with a laser light in the first work area while the laser light is moved in a spiral path. Also in the second step, the first workpiece and the second workpiece are melted by irradiation of the laser light to form a liquid-phase portion. Also in the second step, the laser light is moved so as not to irradiate the liquid-phase portion a second time.
