An electric component mounting structure comprising: a dash panel extending in a vehicle width direction; a cowl panel connected to an upper part of the dash panel and extending in the vehicle width direction; a side panel connected to end portions of the dash panel and the cowl panel in the vehicle width direction and extending in a vehicle front-rear direction and a vehicle up-down direction; a steering support member disposed behind the cowl panel and extending in the vehicle width direction; and a mounting bracket that attaches an electric component to a vehicle body , characterized in that the mounting bracket comprises: a body part to which the electric component is attached; a front leg part extending forward from the body part ; an upper leg part extending upward from the body part ; and a lower leg part extending downward from the body part , the cowl panel includes a front mounting point to which the front leg part is connected, the side panel includes an upper mounting point to which the upper leg part is connected and a lower mounting point to which the lower leg part is connected, the lower mounting point is disposed behind the front mounting point , the upper mounting point is disposed above the steering support member and behind the lower mounting point , and the upper leg part extends diagonally rearward and upward so as to be oriented rearward as the upper leg part goes upward in a side view of the vehicle . a dash panel extending in a vehicle width direction; a cowl panel connected to an upper part of the dash panel and extending in the vehicle width direction; a side panel connected to end portions of the dash panel and the cowl panel in the vehicle width direction and extending in a vehicle front-rear direction and a vehicle up-down direction; a steering support member disposed behind the cowl panel and extending in the vehicle width direction; and a mounting bracket that attaches an electric component to a vehicle body , characterized in that the mounting bracket comprises: a body part to which the electric component is attached; a front leg part extending forward from the body part ; an upper leg part extending upward from the body part ; and a lower leg part extending downward from the body part , the cowl panel includes a front mounting point to which the front leg part is connected, the side panel includes an upper mounting point to which the upper leg part is connected and a lower mounting point to which the lower leg part is connected, the lower mounting point is disposed behind the front mounting point , the upper mounting point is disposed above the steering support member and behind the lower mounting point , and the upper leg part extends diagonally rearward and upward so as to be oriented rearward as the upper leg part goes upward in a side view of the vehicle . a body part to which the electric component is attached; a front leg part extending forward from the body part ; an upper leg part extending upward from the body part ; and a lower leg part extending downward from the body part , the cowl panel includes a front mounting point to which the front leg part is connected, the side panel includes an upper mounting point to which the upper leg part is connected and a lower mounting point to which the lower leg part is connected, the lower mounting point is disposed behind the front mounting point , the upper mounting point is disposed above the steering support member and behind the lower mounting point , and the upper leg part extends diagonally rearward and upward so as to be oriented rearward as the upper leg part goes upward in a side view of the vehicle . <EOS>