A vehicle suspension support structure including a lower arm (17) formed by, for example, a lower arm 17 rotatably supporting a knuckle for a front wheel, and a shock absorber attenuating vibration of the lower arm (17), wherein a lower end of the shock absorber is rotatably supported by a support bracket 32 that is welded to an upper face of the lower arm (17) formed by, for example, the lower arm 17, and wherein in the upper face of the lower arm (17), a bulged portion 40 is formed where a weld target portion to which an end of the support bracket 32 is welded is formed to bulge upwards as compared to the periphery thereof.