Abstract: Objective To analyze the prevalence of cancer in Liaoning cancer registries in 2016. Methods Collect the incidence and mortality data of cancer reported by cancer registration(35 counties and districts)in Liaoning province in 2016,and calculate the incidence and mortality,standardized rate,cumulative rate(0-74 years old)and age group rate,The China 2000 Population Census data and Segi's standard population were used for calculating age-standardized rates. Results In 2016,the incidence of cancer in Liaoning cancer registries was 383.54/100,000,and Age-standardized incidence rates by World standard population and by Chinese standard population were 200.06/100,000 and 204.44/100,000,and age-standard incidence rate by Chinese standard population for urban areas(201.40/100,000)was higher than that in rural areas.(186.43/100,000);the incidence of 40-year-olds and above increased rapidly,reaching a peak in the 80-year-old group;the incidence of cancer in urban men and women in 35-year-olds and above was higher than that in rural men and women;lung cancer,colorectal cancer and breast cancer are the most cancer in Liaoning province.In 2016,the mortality of cancer was 249.79/100,000,the Age-standardized mortality rates by World standard population and by Chinese standard population were 123.00/100,000 and 124.32/100,000.The mortality in urban areas(121.93/100,000)was lower than that in rural areas(131.03/100,000).The peak age-specific mortality of cancer is in the 80-year-old group.The mortality of males in all age groups of 20-79 years old in rural areas is higher than that in city,and the mortality of females in 55-79 years old is higher than that in rural areas.Lung cancer,liver cancer and colorectal cancer are the cancer with the highest mortality in Liaoning province. Conclusion The incidence and mortality of cancer in Liaoning province are higher than the national level.Overall,the incidence and mortality are higher in males than females,urban incidence is higher than rural,rural mortality is higher than urban,the difference in urban and rural residents'cancer burden is obvious.

Key words: Cancer registration, Cancer, Incidence, Mortality, Liaoning