Although lung cancer is not the most common cancer, as the leading cause of cancer-related deaths in men and women, it is the most deadly (American Cancer Society 2000). Lung cancer is also the leading cause of cancer deaths in Taiwan. According to the vital statistics of Department of Health in Taiwan, the incidence of lung cancer is rank of 5th. However, the rank of cancer fatality is the second and first in men and women, respectively. The mortality of lung cancer have significant increasing trend in men and women during the two-decade period. There are 6,555 persons die for lung cancer in 2001.