To overcome and improve traditional BP &display the advantages of NN and inherited algorithm, the essay has put forward NN quadric training method, applied inherited algorithm to NN weight and got the result from training.

• 为克服和改进传统的份，算法的不足，发挥神经网络和遗传算法的优势，提出一种基于遗传算法的神经网络二次训练方法。