Abstract: A content analysis of 138 national-level semiconductor industry development policies was made since the founding of the People's Republic of China 70 years ago, and the findings are as follows :（1）Programmatic documents and guiding strategies have accounted for a certain proportion. In terms of specific policy, attention hasn’t been paid to the science and technology policies and talent policies to promote semiconductor basic research. (2) In the process of policy change, the supply-side and environment-side policy tools have gradually become the main policy tools, while the demand-side policy tools have steadily increased. The government is increasingly inclined to combine multiple policy tools. (3) In terms of the use of the three types of policy tools, information service is not enough in the supply-side policy tools. The government attaches increasing importance to environmental policy tools, while the demand-side policy tools are used less frequently. The realistic choices under Sino-US trade conflict are: first, form a policy tool system of the whole innovation chain from basic research to industrialization; Second, the use of policy tools in the semiconductor industry should be balanced and improved; Third, the structure of policy tools should be advanced.