Its principle is a Chinese medicine conditioning, called warm moxibustion. By heating the abdomen, the meridians and acupoints of the human body are opened, so that herbs can enter the 14 main meridian of the human body from the navel (Shenque point), regulate the deficiency-cold function of the spleen and stomach, enhance the metabolic function of the human body, and achieve the effects of eliminating dampness, expelling toxin, reducing swelling, relieving fat and warming the uterus.