LOWER VEHICLE BODY STRUCTURE OF VEHICLE

A lower vehicle body structure of the vehicle may include a side member extending in a longitudinal direction of a vehicle, disposed on both sides in a width direction of the vehicle and having a closed cross-section formed therein; a connecting member connected to the side member at a front or a rear based on front and rear directions of the vehicle and having a closed cross-section formed therein; and at least one pipe unit provided inside in the longitudinal direction of the side member or the connecting member to inflow a working fluid therein.