Pneumonia injection for 15 days and still coughing, may be the recovery period of pneumonia, infection is not controlled, special infection, non-infectious diseases, etc., need to be targeted treatment, such as symptomatic treatment, adjustment of antibiotics, anti-tuberculosis treatment or other therapeutic measures. 1. Recovery stage of pneumonia: After anti-infection treatment, if all other symptoms of pneumonia are relieved, blood count and other inflammatory indexes return to normal, chest CT shows obvious absorption of lung lesions, and only coughing symptom is not relieved, then it is usually the recovery stage of pneumonia, and there is no need to continue to apply antibiotics, and only need to symptomatic treatment, for example, using dextromethorphan hydrobromide and other drugs to stop coughing treatment. 2. Infection is not controlled: such as drug-resistant bacteria infection or antibiotics do not cover the infection of the causative organisms, injection treatment for 15 days is still coughing, and the infection is not controlled, such as mycoplasma pneumonia using cephalosporin antibiotics is ineffective, you may need to be adjusted to the levofloxacin, moxifloxacin, and other drugs. 3. Specialized infections: for example, tuberculosis, which is similar to pneumonia, but antibiotic treatment is usually ineffective, and may need to be treated with anti-tuberculosis drugs such as rifampicin and isoniazid. 4. Non-infectious diseases: such as cryptogenic mechanized pneumonia, chronic eosinophilic pneumonia and other diseases and ordinary pneumonia may be very similar to the performance of the general need to use prednisone and other glucocorticoid drugs. Therefore, pneumonia injection 15 days still cough, the need for timely respiratory medicine, clear specific causes, targeted treatment.