There are many causes of severe cough, so you need to find the cause and use the right medicine. If you have a severe cough, you need to go to the hospital for blood tests to check your blood count, C-reactive protein, blood sedimentation, Mycoplasma pneumoniae, and a chest X-ray. In coughs caused by elevated white blood cells, it is necessary to determine whether the cough is caused by a viral infection or a bacterial infection based on the test results. If the cough is caused by a viral infection, symptomatic treatment with cough suppressant medication is usually required. If the cough is caused by a bacterial infection, antibiotics such as penicillin, cephalosporins, macrolides and quinolones can be used for treatment. 2.If there is pneumonia in the film, antibiotic treatment is needed, usually you also need to pay attention to rest, drink more water, avoid eating irritating food, quit smoking and alcohol. 3. If there is no abnormality in the chest radiograph and the clinical indication is allergic cough, the treatment needs to be decided according to the age of onset, severity and duration of the disease. Inhaled glucocorticoids are usually required. Other options include leukotriene receptor antagonists. Adjunctive treatment can also include oral theophylline, procatheptal and other drugs, but they should not be used alone for a long time. 4. All of the above drugs need to be taken after a doctor’s visit and then according to the symptoms.