Evolutionary programming adopting single mutation operator can not give attention to exploration and exploitation both.So two kinds of mixed mutation strategy including Cauchy+chaotic mutation operator and Cauchy+Gaussian mutation operator are given.A novel adaptive cultural algorithm adopting above mixed mutation strategy is proposed by adopting dual structure in cultural algorithm.Implicit knowledge extracted from the evolution process is used to control occasion and proportion of each mutation operator in mixed mutation strategy.Simulation results indicate that the algorithm can effectively improve the speed of convergence and have better convergence.