There is a difference between moxa fumigation and moxa roasting treatment. Overall, moxa has the effect of warming Yang, through the fumigation of moxa can play the role of warming Yang and dispersing cold, warming the meridians, can treat the cold evidence of the body, including deficiency cold evidence or real cold evidence, deficiency cold evidence when using moxa treatment should pay attention to the moxa time not too long, because too long for the physical weakness of the person may not be able to tolerate. The moxa fumigation time for patients with actual cold can be appropriately long, and the fire can be sufficient, that is, the heat can be greater, which is the difference between actual cold and deficiency cold treatment.