Vehicle lower structure

A lower structure of a floor section in a vehicle, the lower structure in the vehicle comprising:

• paired side sills on both sides in a vehicle width direction of the floor section, each side sill extends in a front-rear direction of the vehicle;
• and
• a frame member between the paired side sills, wherein the frame member includes:
• paired side beam portions, each side beam portion extends in the front-rear direction along a respective side sill and is connected to the respective side sill;
• and
• an inner frame portion that combines plural beam structure portions and connects the paired side beam portions, and
• the frame member has plural triangular structure portions, each triangular structure portion has a triangular shape in a plan view by the respective side beam portion and the plural beam structure portions, and continues in the front-rear direction on the both sides in the vehicle width direction.