In recent years, the incidence of lung cancer has been increasing gradually and has become the most common tumor among men, while the incidence of lung cancer among women is also increasing significantly. Usually, the signs and symptoms associated with lung cancer in women are not obvious in the early stage, which may be easily overlooked and cause delay in the disease. Therefore, we can make preliminary judgment based on the following nine signs, and when we suspect that lung cancer lesions may appear in the body, we should be alert and go to hospital for regular physical examination to achieve early detection, early diagnosis and early treatment. 5. Chest pain: when the lung cancer tumor gradually increases, it may compress the peripheral nerves of the chest, resulting in pain in the chest, which may be vague discomfort, dull pain, stabbing pain, etc.; 6. 8. general weakness: the phenomenon of general weakness and fatigue often occurs, which is not proportional to the degree of work and cannot be recovered after rest. Malignant tumors may also invade muscle tissue and with calcium loss, leading to muscle weakness; 9. Other: a few female patients may show itchy skin and lower limb edema in early stage.