VEHICLE LOWER PART STRUCTURE

The vehicle lower part structure includes a cross member, and a connecting member that is formed in a closed cross-sectional shape and connects the vehicle width direction outer end portion of the cross member and the rocker. A first fragile portion and a second fragile portion extending in the front-rear direction from the outermost side to the inner side in the vehicle width direction are formed on the upper wall of the connecting member, and a third fragile portion extending in the front-rear direction is formed on the lower wall of the connecting member between the first fragile portion and the second fragile portion in the front view, and a distance along the vehicle width direction between the first fragile portion and the third fragile portion is shorter than a distance along the vehicle width direction between the second fragile portion and the third fragile portion.