The seventh national census has been completed. The data obtained from the census can help people master and analyze important information such as population change, sex ratio and sex ratio at birth. However, it is difficult for us to directly print the information expressed by the data into our minds only by relying on tables. Therefore, the team members use some data of the census and Echarts open source visualization database to compare the age structure, the changes of census data over the years and the age structure of each province, the total number of provinces and other data for visual design, in the form of web pages to complete the interactive display.