In this work we have observed the skin temperature of central line of the back and chest-abdomenon the human body truck by the infrared thermography. Here care the results: (a) 0f all the volun-teers

57. 1 % central lines of 1he back and 7. 7 % central lines of the chest-abdomen of the volunteersare the longitudinal high thermal lines in normal state. (b) After moxibustion at Mingmen(GV 4)point

the temperature of 70. 4 % central lines of the back is going up. After moxibustion at Zhongwan(CV 12)point

the temperature of 56. 0 % central lines of the chest-abdomen is going up. The highthermal lines are longer and their continuity is hotter after moxibustion. (C) The lines on the backwhich are about 20

50 centimetres are longer than those on the chest-abdomen which are about 10 -30 centimetres. The results suggest that the high thermal lines are the objective display of the tempera-tu re character on the Governor and Conception vessel. The formation of high thermal line may havesome relationship with the cornpact connective tissue or microcirculation.