A suspension apparatus for a vehicle may include: a member part including a side member part extended in a first direction and a cross member part extended in a second direction; a pair of knuckle parts spaced apart from each other in the second direction, and coupled to and supported by a wheel; and a posture maintenance part supported by the member part, having both sides connected to the pair of knuckle parts, respectively, and configured to absorb shock applied from a road surface and adjust a relative height between the pair of knuckle parts.