Genetic algorithm based on natural evolutionism is a good method to resolve complicated geotechnic nonlinear problems. Some classical works on genetic algorithm are introduced and remarked. The settlement of a soft soil foundation often manifests as complicated features at time sequence due to the influence of many factors. In the settlement prediction of a reinforcement and slant rectification
genetic algorithm programme coded by MATLAB predicts the settlement. Calculation result is consistent with the result from actual measurement. It indicates that genetic algorithm has much more superiority than traditional algorithm in global optimization