Non-small cell lung cancer antigen 6.78ng/ml indicates that the antigen value is high, which can be treated by symptomatic treatment, surgical treatment and medication. NSCLC antigen can be categorized into carcinoembryonic antigen, cytokeratin 19 fragment and squamous cell carcinoma antigen, with normal values of 0-5ng/ml, 0-3.3ng/ml and 0-2ng/ml, respectively. if the value of NSCLC antigen is 6.78ng/ml, it may be related to the development of NSCLC, but it may be also due to the benign diseases such as pneumonia and tuberculosis. 1. Symptomatic treatment: if the elevation of antigen is not caused by non-small cell lung cancer, then there is no need to treat it for the time being, as long as anti-inflammatory, anti-tuberculosis and other treatments are actively taken, daily care is strengthened, healthy living and dietary habits are maintained, and regular rechecking is enough. 2. Surgery: Surgery is the first choice for patients with surgical indications, and after surgery, chemotherapy and targeted drugs can be assisted according to the needs of the disease. 2. Drug therapy: If surgery is no longer suitable, chemotherapy, targeted drugs and immunotherapy can be chosen to slow down the progression of the disease and improve the quality of life. It is recommended that patients further improve the relevant examinations to clarify the diagnosis and actively treat the disease to obtain a better prognosis.