A stabilizer bar includes a parallel bar which is secured with respect to a frame via fasteners in each of which a bush is fitted, and leg bars which extend from both ends of the parallel bar with distal ends of the leg bars connected to suspension arms. Each leg bar is tapered from an upper end toward a lower end thereof to continuously decrease a section modulus of the leg bar from the upper end toward the lower end thereof so that the stress generated by a load applied to the lower end of the leg bar is not concentrated on a bent part of the stabilizer bar and is distributed over the entire leg bar so as to prevent the stabilizer bar from being broken at the bent part.