Living or working in a heated environment for a long period of time can produce some uncomfortable symptoms called heating syndrome. Also known as: heating discomfort syndrome. Nowadays, with the improvement of people’s living standard, more and more urban residents (especially in the north) have heating facilities in their homes, which is a good thing. However, it should be noted that the number of people suffering from illnesses due to improper use of heaters is also increasing. These patients mostly live or work in a heated environment with closed doors and windows and dirty air, and are prone to “heating discomfort syndrome”, such as dizziness, lightheadedness, sweating, dry throat, chest discomfort, shortness of breath, irritability, general sweating, weakness of limbs, bleeding from nostrils, blood concentration, and increased blood viscosity. Moreover, people in the heated environment, the body surface blood vessels in an expanded state, when less clothing, once you leave the heated environment, the temperature difference increases, the peripheral vessels suddenly contracted, the plant autonomic nerve and endocrine function is suppressed, disorder. Especially the elderly and children and frail people are difficult to adapt, very easy to produce upper respiratory tract infections, but also can lead to chronic pharyngitis attacks and so on. Prevention caution: First, the room temperature should not be adjusted too high, generally 16 ℃ -18 ℃ is appropriate, do not exceed 21 ℃; Second, in the use of heating, to keep the indoor air fresh, open the windows every morning and evening, the appropriate circulation of air; Third, in the application of heating in the environment of people do not feel the evaporation increase, in more water at the same time, we should pay attention to maintain a certain humidity, so as not to be too warm and dry aggravate the symptoms of discomfort. You can sprinkle water on the floor, but also in the heater pendulum metal water containers or wet towels, so that the hot steam to increase the humidity of the room; Fourth, when leaving the living room heating environment, should immediately add clothing, especially in the cold days, more clothes should be worn, so as not to catch a cold induced by cold. In addition, often participate in outdoor physical exercise, can enhance the body’s immunity, strengthen the cold and resistance to disease.