Suspicious nodular lesions in the right upper lung need to be considered as malignant lesions, or benign lesions such as infections, hemangiomas, and lung misshapen tumors. 1. Malignant lesions: suspicious nodular lesions in the right upper lung may be caused by lung cancer, a malignant tumor disease, or malignant tumor cells from other parts of the body metastasize to the lung. It can be clearly diagnosed through imaging examination and pathological biopsy, etc. Surgery, radiotherapy, chemotherapy and other treatment means can be used according to the condition. 2. Benign lesions: abnormal nodular lesions in the right upper lung may be caused by various benign lesions, such as pulmonary hemangioma, pulmonary malformation, interstitial pneumonia, tuberculosis and so on. If the nodule is caused by pneumonia, anti-infection treatment such as cephalosporin is needed; tuberculosis patients will have symptoms such as coughing, coughing up sputum, blood in sputum, etc., and need to be treated with anti-tuberculosis treatment such as isoniazid and rifampicin; most of the lung misshapen tumors are asymptomatic, and early resection is recommended. Right upper lung nodules caused by different factors require different treatments and should be followed up regularly when asymptomatic and of unknown etiology. Individuals who find suspicious nodules through examination should undergo further tests to clearly diagnose the disease before adopting the appropriate treatment plan.