关键词: 肿瘤, 肺肿瘤, 预期寿命

Abstract: Objective　To explore the impact of death due to major malignant tumors on life expectancy among the permanent residents in Beijing's Fengtai District from 2011 to 2015.Methods　 We collected the data concerning the permanent residents of Beijing's Fengtai District during 2011 to 2015 from Beijing Municipal Public Security Bureau，and the data about the permanent residents of Beijing's Fengtai District who died of 5 major malignant tumors（lung cancer，colorectal cancer，liver cancer，gastric cancer，pancreatic cancer） from National Cause-of-death Registration System.The life table developed by CHIN Long Chiang was used for calculating the life expectancy.Arriaga's method was adopted to decompose the differences in life expectancy by age groups as well as death causes.Results　During 2011 to 2015，the average life expectancy of the permanent residents in Fengtai District was 82.34 years old.Women had longer average life expectancy than men.Life expectancy grew in the period 2011—2012，which was mainly attributed to the death toll falling from lung cancer，followed by colorectal cancer，pancreatic cancer and gastric cancer，but the increased liver cancer death toll played a contrary effect.Life expectancy declined in the period 2013—2015，showing a 0.053-year-old decrease，which was due to the increased death toll from lung cancer，while the decreased death toll from colorectal cancer，liver cancer，gastric cancer and pancreatic cancer was counterproductive.Conclusion　Lung cancer is most closely related to life expectancy，followed by liver cancer，colorectal cancer，gastric cancer and pancreatic cancer.Therefore，reducing tobacco consumption and smoke inhalation in the kitchen are the key to decreasing cancer mortality.Moreover，the control of risk factors such as bad life habits （tobacco consumption，alcohol consumption and bad eating habits） and obesity and early targeted interventions can lower the age group-specific cancer mortality.

Key words: Neoplasms, Lung neoplasms, Life expectancy