We have experoenced 7 cases of juvenile lung cancer.Five cases are male and two cases are female. The ages range from 23 to 38 years. The initial symptoms are most commonly cough. Lung cancer in young men grows rapidly, metastasizes early and cause early death. It is pointed out that the cause of this disease is otten clinicaly specific. Lung cancer has been appearing at an ealier age. The age of the patient should not mitigate against the diagnosis of lung cancer.