Tiny nodules in the apical segment of the upper lobe of the right lung with a diameter of 3 mm have a relatively high probability of being benign, and need to be observed regularly. Lung nodules can be divided into inflammatory lung nodules, tuberculous lung nodules and tumor lung nodules. 1. Inflammatory lung nodules: patients with inflammatory lung nodules caused by bacterial infection need anti-infective treatment, often choose cephalosporin penicillins to fight infection. 2. Tuberculous pulmonary nodules: patients infected with tuberculosis causing pulmonary nodules, need to carry out antifungal treatment, fungal drugs can choose rifampicin, isoniazid, pay attention to review liver function. 3. Tumor pulmonary nodules: usually lung cancer, need to be treated with surgical resection of the tumor, and send pathological biopsy after surgery to clarify the nature of the tumor. If the patients have any discomfort, they should go to the hospital in time for examination and symptomatic treatment after clarifying the cause of the disease, and should not be careless in order to avoid delaying the treatment.