Haze is the result of the interaction between specific climatic conditions and human activities, and in many areas of China, fog and haze are used together as a catastrophic weather phenomenon for early warning and forecasting, collectively referred to as “haze weather”. The economic and social activities of a high-density population will inevitably emit a large amount of fine particulate matter (PM2.5), once the emission exceeds the atmospheric cycling capacity and carrying capacity limit, the concentration of fine particulate matter continues to accumulate, and at this time, if affected by the static weather and other influences, it is very easy to appear a wide range of haze phenomenon. Sunlight through the atmosphere, the atmosphere of various molecules of sunlight absorption and scattering, sunlight through the atmosphere to the ground, the loss of a large amount of visible light, resulting in low atmospheric visibility, haze occurs when the air becomes turbid, the more particulate matter in the air, the sunlight absorption and scattering effect of the stronger, the loss of sunlight is also the more the visibility of the atmosphere will be relatively reduced. At this time, we see the sky gray, can not see the blue sky. The absorption of sunlight by fine particulate matter is also one of the reasons for the formation of the atmospheric greenhouse effect (global warming). At dawn, people begin to cook, office workers drive to work, factory workers begin to work, boilers begin to burn, chimneys soon smoke, the smoke quickly gathered to cause air pollution emissions increase, exacerbating the degree of air pollution. In recent years, with the modernization and development of the city, the air suffered serious pollution, the past blue sky and white clouds, bright starry sky has now become a “luxury” in most cities. Pollutants that cause air quality to deteriorate include sulfur dioxide, nitrogen dioxide, carbon monoxide, respirable particulate matter, ozone, and so on. In some areas, especially large cities, harmful substances emitted by industrial production, motor vehicle exhaust, construction, winter heating and coal burning are difficult to diffuse, resulting in a significant decline in air quality. During this period, PM10 and PM2.5 are the primary pollutants. Haze is hazardous to human health Haze particles are represented by PM, and the 2.5 in PM2.5 refers to particulate matter in the atmosphere with a diameter less than or equal to 2.5 micrometers, which can be inhaled into the lungs. Haze weather is more likely to cause cancer than cigarettes. Experts pointed out that in the past 30 years, China’s public smoking rate has been declining, but the prevalence of lung cancer has risen by more than four times, which may be related to the increase of hazy days. Continuous haze weather shrouds many provinces in the country, floating in the air a large number of dust particles and smoke particles and other harmful substances will cause harm to the human respiratory tract, its composition is very complex, the size of hundreds of particles, including dust, pollutants, viruses, and heavy metal particles, and other harmful substances, particles, once into the respiratory tract and adhere to the alveoli, destroying the respiratory tract mucosal defenses, bacteria into the respiratory tract, easy to cause Upper respiratory tract infections, light will cause rhinitis and other nasal diseases outside, heavy will cause bronchitis, asthma, pulmonary fibrosis and other respiratory diseases, and may even cause lung cancer. Smoggy days are also heart killers. Studies have shown that the air pollutants aggravated cardiovascular mortality will increase, hazy weather particulate pollutants will not only trigger myocardial infarction, but also cause myocardial ischemia or injury. When the haze shrouds the air pressure is low, the oxygen content of the air has decreased, it is easy to feel chest tightness. Moist and cold fog and haze, but also cause cold stimulation, resulting in vascular spasm, blood pressure fluctuations, increased heart load. At the same time, some pathogens in the haze can cause headaches and even induce hypertension, cerebral hemorrhage and other diseases. Haze weather can also lead to the weakening of ultraviolet rays in the near-surface layer, so that the activity of infectious germs in the air is enhanced, and bacterial viruses and microorganisms multiply rapidly, and infectious diseases increase. For patients with chronic respiratory diseases such as allergic rhinitis, bronchial asthma, chronic bronchitis, obstructive emphysema and chronic obstructive pulmonary disease, hazy weather can cause acute attacks or acute aggravation of the condition. Due to the reduction of sunshine on foggy days, children’s ultraviolet irradiation is insufficient, the body of vitamin D generation is insufficient, the absorption of calcium is greatly reduced, serious will cause infantile rickets, children’s growth slowdown. Gloomy hazy weather due to the weak light and the resulting low air pressure, easy to make people produce mental laziness, depressed and pessimistic mood, easy to get annoyed when encountering things that do not go well, and even completely out of control. In addition, hazy weather when the field of vision visibility is low, poor air quality, easy to cause traffic congestion, traffic accidents, pedestrians on the road, vehicles have a great deal of safety hazards, very dangerous! Haze weather precautions 1, not morning exercise less go out When encountering hazy weather, the public should go out as little as possible, cancel the morning exercise, must go out when it is best to wear a medical mask protection, wear a special anti-haze PM2.5 mask, anti-haze nasal mask, filtering PM2.5, to avoid respiratory irritation, resulting in disease. When returning from an outing, wash your face and exposed skin immediately. Continuous wear mask time is best not more than 4 hours, pay attention to daily cleaning and sterilization with boiling water to ensure hygiene. The popularity of some personalized masks, cartoon masks, the thickness of only one or two layers, it is difficult to filter the air viruses, dust and so on. 2, driving and walking more careful moderate and heavy haze weather, visibility is low, poor vision, driving, cycling and walking people should be more careful, especially through intersections and unattended railroad crossings, to slow down and follow traffic rules to avoid traffic accidents. 3, close the doors and windows under the haze weather, the family should close the doors and windows, wait until the haze scattered sunrise and then open the windows to change the air. Air purifier filters can effectively adsorb harmful substances, play a role in purifying the air. Conditional can use air purifiers, and less open windows in hazy weather, you can choose the midday sunshine is more adequate, less pollutants when the windows open for a short time to change the air. Haze raging fire air anion health machine market, research has proved that the air anion can actively capture the air PM2.5 and other suspended particles, through the charge exchange to change its charged properties, different charged properties PM2.5 mutual attraction adhesion, cohesion into a group, and ultimately settled to the ground. 4, eat more vegetables and fruits Air is not good, some of the “lung” recipes have appeared, from pig blood to duck blood to a variety of herbs, a variety of. The so-called “clear lung” is to clear heat, dampness, detoxification. You can eat pig’s blood, duck’s blood; green bean soup, red bean soup, lotus heart boiled water to drink. Drink more water, eat more vegetables and fruits is a suitable choice. Diet in hazy weather is recommended to choose light and easy to digest and rich in vitamins, eat more fresh vegetables and fruits, eat as little as possible stimulating food, it is recommended to increase the lily, pumpkin, taro, white fungus, black fungus, pig’s blood, duck’s blood, etc. with nourishing yin and moistening the lung effect of the food. 5, to protect the young and old and susceptible people The human respiratory system from the nasal cavity to the lower respiratory tract has a series of barriers, particles with a diameter of less than 10 microns can enter the lower respiratory tract to reach the bronchial tubes and alveoli, resulting in pulmonary fibrosis, chronic obstructive pulmonary disease, damage to lung function. Children, the elderly and heart disease, respiratory disease patients to avoid prolonged, high-intensity outdoor activities, close the doors and windows at home, the general population should also be moderate to reduce outdoor activities. 6, eat more fish food foggy day sunshine reduction, suspended particles cage enhancement, ultraviolet irradiation is insufficient, the body of vitamin D generation is insufficient, therefore, it is necessary to supplement the daily life of vitamin D, you can choose to oral cod liver oil pills, but also to eat more fish food, such as tuna, salmon and so on. 7, drink more water do not stay up late The human body on PM2.5 particles have a certain ability to resist, its weapons one is the human bronchial secretion of a secretory immunoglobulin A, another is the mucus cilia in the lungs, they have a self-cleaning function of the lungs. Drinking water can make secretory immunoglobulin A and mucus cilia stronger. Drink more water, pay attention to rest, and do not let the body’s resistance drop because of factors such as staying up all night and being nervous. If you feel tingling, swelling, or a foreign body sensation in your eyes, you can purchase eye drops to put in your eyes to relieve the discomfort.