Abstract: Little dose the structural topology simulated annealing algorithm (STSA) consider structural mechanical property and more dose it pay attention to the geometric configuration while optimizing the topology of a truss structure. Moreover, fully stressed design (FSD) specializes in the section optimization of truss structures with fixed configuration. Therefore, FSD was introduced into heuristic searching process of STSA to improve the intelligent algorithm. In addition, an approach was proposed to identify爐he relative configuration stability of a truss structure, and incorporated FSD with STSA to establish a hybrid algorithm. A benchmark optimizing problem was performed based on such modified intelligent algorithm, and the results exhibit that the searching process of hybrid algorithm is more stable than that of STSA in terms of efficiency, robustness and optimal solutions.