Chinese medicine points out, wet for Yin evil, can hurt Yang Qi, because of its viscous, heavy turbid, so easy to inhibit the qi, because of wet and disease, more lingering difficult to cure, which is the pathological characteristics of wet evil. Dampness has two kinds of cold and dampness and dampness-heat: more cold and dampness in winter, people’s respiratory system is most afraid of cold, children because the immune system is still immature, in the temperature change is relatively large, humidity is relatively large, more prone to get respiratory tract infections, coupled with the characteristics of the lingering dampness is difficult to cure, so the course of the disease will be relatively long. Dampness and heat, is heat and dampness at the same time invade the human body, because of the summer and fall season heat and dampness, dampness and heat combined invasion of the human body, fever, body heat does not raise, headache and heavy, heavy body and pain, bitter mouth, chest congestion, urine yellow and short. Generally speaking, the human body is suitable for the humidity is 40% -60%, humidity is moderate, people’s spirits multiply. According to scientific determination, air humidity is too large, is conducive to the reproduction and dissemination of some bacteria and viruses, when the air humidity is higher than 65%, the fastest breeding of germs. Due to the rainy, humid air, clothing and food are easy to moisture, and even mold, hair, people will also feel uncomfortable. If you wear moisture clothing, easy to catch a cold or induce joint pain, eat moldy and spoiled food, will cause gastroenteritis, and even lead to poisoning, especially the resistance of the elderly children must pay attention to prevent the invasion of moisture. To avoid the intrusion of “dampness”, the following measures should be taken: 1, a reasonable diet Eat more spleen and dampness food, such as lentils, winter melon, etc., do not remember to eat cold, greasy food, so as not to help dampness injury to the spleen. If necessary, you can take drugs to strengthen the spleen and dampness, such as Huo Xiang Zheng Qi Shui, Baohe Pills. 2, pay attention to the combination of work and rest Excessive fatigue can easily lead to dampness, therefore, must be reasonable arrangement of work and rest time. At the same time, we should also pay attention to strengthen physical exercise, moderate exercise can enhance physical fitness, digestion, promote blood circulation. 3, to avoid external dampness injuries as little as possible in the humid place. Keep indoor humidity moderate, rainy weather, pay attention to close the doors and windows, wait until the sky is clear and open the doors and windows in a timely manner to maintain air circulation, in order to get rid of moisture; go out and carry rain gear in case of rain; do not sit in the cold and wet place when you go on a trip.