In a suspension structure, a suspension link has a hollow structure in which a pair of frame brackets are joined together, while opposing each other. Also provided is a stiffening bracket (19) integrally connected to both the frame brackets for holding and sandwiching the frame brackets together. The stiffening bracket is configured to hold and sandwich both an end face of a first one of the frame brackets facing apart from the mating face with the second frame bracket and an end face of the second frame bracket facing apart from the mating face with the first frame bracket together. One end of a stabilizer, a height sensor, or the like is connected to the stiffening bracket.