A new way for trend prediction of the conditions of rotary sets with genetic algorithm(GA) is explored.The selection of fitness is a key to achieve the trend prediction with GA.

• 探讨了采用遗传算法(GA)进行旋转机组工作状态趋势预测的新途径，指出了适合度的选择是实现GA算法趋势预测的关键。