Abstract: Original innovation is the driving force for the development and progress of science and technology, and an important factor in determining the success or failure of science and technology and even economic competition among countries. China has always taken the enhancement of original innovation ability as a major strategy for national science and technology development in the new era. This paper focuses on the original innovation policy documents issued by the state in the context of the innovative national strategy (2006-2019), and through the establishment of the PMC evaluation index model and topic model, it evaluates and analyzes China's original innovation policy in three dimensions: the overall quality, the distribution trend of indicators and the evolution of topics. The results show that, in the context of the innovation-oriented national strategy, the original innovation policies are rich in types, comprehensive in content, mainly encouraging and guiding policies and focusing on innovation resource supply policy tools. However, there is still room for improvement in the supervision and evaluation, the coverage and implementation, and the role of guiding the transformation of innovative achievements. In view of the existing problems of the national original innovation policy under the background of the innovation-oriented national strategy, this paper proposes relevant suggestions for our government to formulate and implement the original innovation policy more scientifically and effectively.