Chronic bronchitis usually does not show symptoms of hemoptysis. Clinically, chronic bronchitis is most often seen in patients who have been smoking for a long time, and every year when the seasons change, coughing and sputum can easily appear, even with post-activity heart tiredness and shortness of breath, and longer chronic bronchitis can be accompanied by chronic obstructive pulmonary disease. However, hemoptysis is relatively rare, unless accompanied by bronchial dilatation, old tuberculosis, pulmonary fibrosis, lung abscess, etc. When the infection is heavy, it can cause the rupture of local bronchial blood vessels, resulting in hemoptysis, but the amount of hemoptysis is generally small, which does not easily lead to life-threatening, given active anti-infection treatment and hemostatic treatment, the symptoms will soon disappear. In conclusion, if hemoptysis occurs in chronic bronchitis, high-resolution CT examination of the chest and fiberoptic bronchoscopy should be given if necessary to find out whether other diseases, such as tuberculosis and lung cancer, are combined in order to avoid missed diagnosis and misdiagnosis.