The heat index is introduced into short term electric load forecasting. It is the statistic result of biometeorology, which reflects the effect of air temperature and air relative humidity on man's sense. 就电力负荷短期预测工作引入热指数指标,它来源于生物气象学的统计结果,是人体感受气温和空气相对湿度综合作用的一组统计数据。