Side Reinforcing Structure of Vehicle Body

An embodiment side reinforcing structure includes a front pillar, a rear pillar, and a glass run lower inner reinforcement connecting the front pillar and the rear pillar. An embodiment vehicle includes a vehicle body including a front pillar and a rear pillar, a glass run lower inner reinforcement extending along a length direction of the vehicle body and connecting the front pillar and the rear pillar, a glass mounted on a side of the vehicle body between the front pillar and the rear pillar and above the glass run lower inner reinforcement, and a regulator extending in a vehicle height direction and comprising an upper mounting portion and a lower mounting portion, wherein the regulator is connected to the glass run lower inner reinforcement through the upper mounting portion, and wherein the regulator is configured to move the glass vertically.