Negative emotions such as anxiety, depression and anger can cause the body to release histamine and other substances that cause metabolic reactions, increase the excitability of the vagus nerve and decrease the responsiveness of the sympathetic nerve, thus causing or aggravating asthma attacks. This is because negative emotions can cause the body’s immunity to decline, thus making it susceptible to viral attacks and causing respiratory infections that can trigger asthma. Therefore, experts say that asthma patients must maintain an optimistic attitude so as to effectively control the asthma condition. Measures: 1, maintain a good state of mind, pay attention to adjust the mood. 2, develop a regular diet, preferably light, less stimulating, should not be too full, too salty, too sweet, avoid cold, seafood, tobacco, alcohol, spicy and other stimulating food, you can eat more edible mushrooms, for example, shiitake, mushrooms, mushroom polysaccharide, etc., can enhance the body’s resistance. 3.To enhance immunity and prevent respiratory infections, it is important to regulate immune function, and attention should be paid to seasonal warmth. 4, attention should be paid to the supplementation of health elements and trace elements. In particular, antioxidant nutrients such as beta-carotene, vitamin C, E and trace elements such as selenium should be increased. Antioxidant nutrients can scavenge oxygen free radicals, reduce oxygen free radical damage to tissues, and reduce bronchial trace elements of selenium to prevent asthma.