针对传统遗传算法的早熟收敛问题,在著名的“基因块”假设的基础上,提出了一种改进算法：利用设计的新算子对传统遗传算法演化过程中被淘汰的个体进行二次演化，使得可能包含在将来的演化中对结果的全局最优性产生重要影响的基因块得以保留,以此来避免遗传算法早熟收敛现象。实验结果证明了该改进算法可以有效地避免早熟收敛，提高了算法全局优化能力。-Premature convergence of traditional genetic algorithm, based on the assumptions of the famous " gene block proposed an improved algorithm: use of the design of the new operator of the second individual to be eliminated in the evolution of the traditional genetic algorithm evolution, makes it possible to include the results of global optimality in the future evolution of genes that have an important impact block is preserved, in order to avoid premature convergence of genetic algorithm. Experimental results show that the improved algorithm can effectively avoid premature convergence, improved algorithm for global optimization capability.