If it is due to a nodule combined with a lung infection, then it usually takes 1~2 weeks. If it is a benign nodule not combined with an infection, antibiotic treatment is usually not needed. 1. In the case of infected lung nodules, there are indications for antibiotic treatment, which can be combined with antibiotics, and it usually takes 1~2 weeks to fully control the symptoms, but some people may have more specific infections and need a longer period of time, according to the doctor’s instructions. 2. If it is non-infectious pulmonary nodules, antibiotic treatment is generally not required, the diameter of less than 5mm to regular review of the main, greater than 5mm need to be based on benign or malignant, whether the conditions of surgical resection to develop diagnosis and treatment programs, antibiotics are not essential drugs. Antibiotics are not necessary, but should be used appropriately as prescribed by the doctor.