Lung cancer is one of the most common malignant tumors cancers. In clinical practice, early detection and early treatment is key to reduce the probability of suffering lung cancer. In China, up to 75% of lung cancer patients are diagnosed at the later stage, among which a five-year survival rate is less than 20%. Early lung cancer screening aids in lung nodules detection. It is particularly crucial in detecting early-stage lung cancer, providing timely intervention and treatments, raising the survival rate of patients, reducing medical treatment cost and relieving pains suffered from patients.