Abstract: A press-clamping structure includes: an aluminum electric wire having a conductor portion in which strands of aluminum or aluminum alloy are twisted; and a terminal which includes a bottom plate portion for placing the conductor portion thereon, and a pair of conductor caulking pieces which are provided consecutively to the bottom plate portion and are caulked to hold the conductor portion placed on the bottom plate portion. The conductor caulking pieces are bent so that distal end portions thereof are inserted into the conductor portion, to thereby embrace part of the strands of the conductor portion. At least one projection is formed on the bottom plate portion between the conductor caulking pieces. Outer surfaces of the respective distal end portions of the conductor caulking pieces are oriented towards the projection. The strands are partially held between the outer surfaces of the respective distal end portions and the projection.