Symptoms of lung cancer: (1) Cough: paroxysmal irritating choking cough, no sputum or only a small amount of white foamy mucous sputum. (2) Hemoptysis: intermittent recurrent small amount of bloody sputum, often more blood than sputum, bright color, no mixing of sputum and blood, occasionally large hemoptysis. (3) Fever: moderate to low grade fever. (4) Chest pain: persistent sharp and severe pain. (5) Chest tightness and shortness of breath: it may appear suddenly and become lighter after several days; or it may appear slowly and get worse gradually. (6) If the tumor is large, compression symptoms may appear, such as coarse gas, shortness of breath, puffiness of head and face, and venous stenosis, which means that the fluid has invaded the pleura, and venous stenosis has compressed the blood vessels. Friends who have had lung diseases (such as tuberculosis, bronchitis, past history of coughing and wheezing), with the growth of age, the body’s resistance to decline, the lack of qi and blood energy, you have one or two of the five just mentioned should be careful and attention.