Abstract: Objective To analyze the incidence and mortality of malignant tumors in the tumor registration areas of Shanxi Province in 2020. Methods Based on the data reported by the tumor registration areas in Shanxi Province in 2020, the crude incidence rate, crude mortality rate and age⁃standardized rate by the Chinese standard population (ASRC rate) of the incidence/mortality of malignant tumors in Shanxi Province in 2020 were calculated after stratifying data by urban and rural areas and gender. Results In 2020, the number of new cases of malignant tumors in the tumor registration areas of Shanxi Province was 14,052, the crude incidence was 263.25/10⁵, and the ASRC rate of incidence was 157.67/10⁵. The number of mortality was 8,316, the crude mortality was 155.79/10⁵, and the ASRC rate of mortality was 87.61/10⁵ The incidence rate and mortality rate of malignant tumors increased from the ages of 35 and 40, respectively, showing a characteristics that rural areas were higher than urban areas, and male higher than female. In 2020, the top 10 types of malignant tumors in Shanxi Province were lung cancer, breast cancer, stomach cancer, cervical cancer, colorectal cancer, esophageal cancer, liver cancer, thyroid cancer, kidney cancer and bladder cancer, accounting for 77.02% of all malignant tumors; the top 10 types of malignant tumor mortality in Shanxi Province were lung cancer, stomach cancer, esophageal cancer, liver cancer, colorectal cancer, cervical cancer, breast cancer, pancreatic cancer, brain cancer and gallbladder cancer accounting for 84.06% of all malignant tumors. Conclusions The key cancer types in Shanxi Province Lung cancer include upper digestive tract cancer, cervical cancer, colorectal cancer, liver cancer and breast cancer. The high⁃risk groups of malignant tumors are male population, people over 40 years old and urban population in Shanxi Province, to which attention should pay attention to, and prevention and treatment work should be carried out as soon as possible.

Key words: Tumor registration')">Tumor registration, Malignant tumors, Incidence, Mortality, Age specific incidence (mortality) rate