Room smoked mugwort itself is not particularly harmful, but if it is in a closed space for a long time burning, there is still a certain impact, because smoked mugwort will have a certain odor, if in the closed space, the smell is particularly obvious, and will produce a lot of smoke, is likely to stimulate the respiratory tract, and then appear throat discomfort or coughing symptoms. Room smoked mugwort for the removal of mosquitoes, room odor has a certain effect, but need to pay attention to reasonable control of the time of burning mugwort, and pay attention to timely ventilation, to avoid long time smoked mugwort or in the confined space to stay for a long time. Smoking mugwort must pay attention to do a good job of fire prevention, and to strengthen the ventilation of the room, pay attention to stay away from flammable substances, otherwise it will increase the risk of fire. If you need to smoke moxa in the room, it is recommended to do so under the guidance of a doctor.