Bronchitis is divided into acute bronchitis and chronic bronchitis. Acute bronchitis lasts from 5 days to about 2 weeks, while chronic bronchitis is difficult to cure completely, but infection can be avoided and symptoms can be kept stable. Acute bronchitis is mostly caused by viral and bacterial infections, with cough and sputum as the main clinical manifestations. By actively giving antibiotic treatment, those with good resistance can be cured in about 5 days. If the patient’s resistance is low and the pathogenic bacteria are more virulent, the recovery time is relatively long and it may take about 2 weeks to be completely cured. Chronic bronchitis is clinically defined as the onset of chronic cough for 3 consecutive months per year and 2 consecutive years. Therefore, chronic bronchitis has a prolonged course and is often associated with pollution exposure and decreased body resistance, and may even be a lifelong condition if the cause is not removed. Patients with bronchitis should get plenty of rest, maintain a happy mood, and avoid spicy and stimulating foods.