夏末秋初,特别是立秋以后,天气转凉,昼夜温差较大,为慢性支气管炎高发期。在这期间,稍不注意,便会引起“老慢支”的旧病复发,也有因着凉的新患者。所以,立秋宜防支气管炎。医学研究表明,“老慢支”是感染、理化、气候、过敏等多种因素长期相互作用的结果。由于天气变凉,容易发生呼吸道感染,导致“老慢支”复发。因此,要针对 Late summer early autumn, especially after the beginning of autumn, the weather turned cooler, larger temperature difference between day and night, chronic bronchitis. During this period, a little carelessness will cause the recurrence of old-fashioned chronic bronchitis and new ones because of the cold. Therefore, the autumn should be prevented bronchitis. Medical research shows that “old chronic bronchitis ” is the result of long-term interaction of many factors such as infection, physical and chemical, climate, allergies. Because of the cold weather, prone to respiratory infections, leading to “old chronic bronchitis ” recurrence. Therefore, we must address