The lap fillet arc welding seam 1 according to the present invention is a lap fillet arc welding seam according to the present invention in which two plates 3 and 9 are superimposed to form an end portion of one plate (the vertical wall portion 9a of the upper component 9) (The vertical wall portion 3a of the component 3) is welded along the end portion of the one plate (the vertical wall portion 9a of the upper component 9), and the bead protruded toward the surface side of the vertical wall portion 3a And the welded end portion 1a is located at the top of the bending convex portion 5. The welded end portion 1a is formed on the bending convex portion 5,
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