Impact of yijinjing 'supporting pile' on infrared characteristics of back meridians of neck type cervical spondylosis patients is discussed. 30 patients with neck type cervical spondylosis are trained to do yijinjin 'supporting pile' exercises regularly. Three months later, the infrared thermal images of the backs of those patients are collected in 10 minutes before and after doing exercises. It is found that for those patients, the infrared radiation trajectories (IRRTM) of their Du meridians can be induced obviously after doing yijinjing `supporting pile' exercises and those of their bladder meridians are not obvious. There is a significant difference between the variation of average temperature at the Da-zhui acupuncture point and that in the neck area (P<0.01). The variation after exercises is greater than that before exercises. The average temperature of the Du meridian after exercises is greater than that before exercises. There is a statistic difference in temperature variation (P<0.05). The result shows that through doing of yijinjing `supporting pile' exercises, the infrared radiation trajectories of Du meridians on the backs of patients can be induced significantly, become more continuous and neat and cause the temperature in the areas of Da-zhui acupuncture point, Du meridian and neck to rise.