In this study, a new approach is introduced to solve Blasius differential equation using of Imperialist Competitive Algorithm (ICA). This algorithm is inspired by competition mechanism among Imperialists and colonies and has demonstrated excellent capabilities such as simplicity, accuracy, faster convergence and better global optimum achievement in contrast to other evolutionary algorithms. The obtained results have been compared with the exact solution of Blasius equation and another result obtained in previous works and show higher accuracy and less computational requirements. In addition, the method presented with details can beeasily extended to solve a wide range of nonlinear problems.