The difference between tuberculosis cough and common cough lies in the different causes, different symptoms and different duration of the disease. 1. Different causes: Tuberculosis cough is caused by tuberculosis bacillus, while common cough is mostly caused by bronchial or exobronchial irritation. 2. Symptoms: In patients with tuberculosis, the cough may be accompanied by hemoptysis, which occurs only after two weeks of illness. Most of them have a small amount of hemoptysis, and a few have a large amount of hemoptysis. The common cough is mainly dry or accompanied by sputum, which may be white or yellow in color, and does not show blood or blood. 3. Duration of the disease is different: for patients with tuberculosis, the symptoms of coughing will last for more than two weeks, and the duration will only be longer, which is also the main symptom of tuberculosis. In contrast, patients with a common cough tend to have symptoms of coughing that last for a shorter period of time. No matter which kind of cough you suffer from, you need to treat it in time, usually pay attention to drink more water, exercise more and pay attention to keep warm.