The fire on the throat in the winter sun is generally caused by a decrease in the body’s immunity, and may also be caused by a lack of moisture in the body. The actual fact is that you can find a lot of people who are not able to get a good deal on this kind of things. 1, the body immunity decline: if there is a decline in their own immunity, by the heat stimulation may lead to the body on fire, and may cause pharyngitis, so there will be winter sun on the throat on the fire phenomenon. Usually you can add more nutritious food to help improve the quality of the body; 2, the body lacks moisture: the winter climate is relatively dry, if often eat spicy, stimulating food, such as hot pot, spicy hot, etc., and less water intake, coupled with the sun, the body moisture will appear to further reduce. As a result, it may lead to the phenomenon of fire in the throat in winter when the sun is shining. Patients should usually improve the poor diet structure, try to avoid eating stimulating food, can properly drink warm plain water, or eat fresh fruits and vegetables to replenish water.