Abstract: Two hundred and fifty one young patients and 409 elderly patients with lung caner were confirmed by fiberoscope, cytology and/or pathology, we found out that the incident rate in female was decreased with aging relatively, therefore, in old patients, male female, but in young patients female was relatively increased. The incidence of sgttamous cancer increased relatively with aging, but the incidence of small cell carcinoma was decreased with aging. The surivval rate was lower in young patients but hiher in old patients.