Ai navel is attached to the navel. Medication stimulates Shenque point of navel, which has the functions of dredging meridians, promoting diuresis to reduce swelling, promoting qi circulation to relieve pain, regulating nerves and enhancing immunity. Precautions for sticking the moxa stick to the belly button: Pay attention to the time of sticking the moxa stick to the belly button. The tolerance time of most people is 4-6 hours. However, people's skin sensitivity is different. Some people don't feel it for 24 hours, or only have a slight heat sensation. Some people only stick it for 2 hours, and the local burning sensation and heat sensation are more obvious. This is because the body is more sensitive to heat and has a lower threshold, so there will be a feeling of local fever. Even some people post for too long, and there will be local burns or scalds. So the posting time varies from person to person. If you feel that the local skin has obvious burning sensation, you should take off the moxa stick and stick it to the navel in time. Because it is physical therapy, you can take it off at any time.