The recovery time of lung infection is related to the type of pathogenic bacteria, the severity of the disease, the patient’s own condition, and whether the treatment is timely. Pulmonary infections caused by common bacteria can be cured in about 2 weeks with antibiotic administration or intravenous infusion treatment and active sputum evacuation. Mycobacterium tuberculosis infections require a combination of anti-tuberculosis treatment for six months, and in some patients, even one year to heal. Patients with severe lung infections or complications such as lung abscess or pneumothorax can be cured in 1-2 months. Fungal infections need to be treated with antifungal drugs, and the course of treatment is usually 2-3 months. AIDS pulmonary spore infection can only be controlled by aggressive treatment, but it is difficult to cure. If the treatment is not timely, improper medication or the patient’s own resistance is weak, the recovery time will be correspondingly prolonged or even prolonged. Patients with pulmonary infections need to visit the respiratory medicine department of the hospital in a timely manner, and if necessary, take respiratory secretions and conduct pathogen culture and drug sensitivity tests in order to choose a suitable treatment plan.