The symptoms of coughing that occur in acute bronchitis take about two to three weeks to heal. However, it is not so easy to say about cough in chronic bronchitis, because chronic bronchitis is a chronic disease with a long and slow healing process, so the recovery process is slower, and some patients may even have cough and sputum symptoms for a long time. Therefore, patients with chronic bronchitis use anti-infective drugs and cough medicines such as dextromethorphan when necessary, and must pay attention to keeping warm to avoid getting cold again, and usually drink more hot water. You can also stew iced sugar pear, lily, lotus seeds and other foods that moisten the lungs and throat, eliminate all spicy and stimulating foods, and usually take a walk outdoors or do other simple sports exercises.