Abstract: A breast wall construction which can be constructed easily, quickly and safely at any execution sites includes many breast wall panels arranged in rows. On the back of the breast wall panel rows, many joint brackets with truss construction are placed with the front vertical area of the joint brackets joined to the back of the breast wall panel row which forms the bottom step and the back of the upper horizontal area of the joint brackets joined to the bottom of the top step breast wall panel row which is formed one step higher than the breast wall panel row which forms the bottom step.