Abstract: In recent years, China's achievements in the field of science and technology have attracted widespread global attention. In order to more accurately judge China's current international scientific status and clarify the scientific research contributions of major countries around the world, this article adopts bibliometric methods and uses the Web of Science core collection (including SCI-E and SSCI) database to analyze three perspectives: engagement, promotion and leadership. These perspectives are measured using four indicators: Global Research Engagement, Global Research Leadership, Global Research Promotion and Global Research Contribution. A systematic comparative analysis was conducted between China and major countries around the world. The results show that in terms of engagement, the United States has consistently held the top position, and China has the fastest growth rate and has now become the most important player in the world. In terms of promotion, the United States has always maintained a lead, but China has made rapid progress in the past two decades and now competes on par with the United States. The high-quality research results from the United States have attracted widespread attention worldwide, while the high-quality research outcomes in China receive more attention from domestic scholars. In terms of leadership, the United States has long dominated, while China is rapidly catching up though its overall strength is still relatively weak. In terms of overall scientific research contribution, the scientific research status of traditional scientific research powers such as the United States, the United Kingdom, and Germany is still in the leading position, while China's growth momentum is strong. The United States holds the top position across all time periods, reflecting its powerful dominant role in global scientific research. The relative changes in the scientific research contributions of major countries reflect the diversified development trend of each country's status and role in the field of scientific and technological innovation. It also indicates that the global scientific and technological landscape will be further reconstructed in the future, and China is expected to become a major contributor to the world's scientific research. In the past, certain research reports, relying on selectively chosen data, tended to exaggerate China's progress and may have prematurely concluded that China had surpassed the United States. However, there is still a certain gap between China and the United States at present. Given this reality, China should: 1) enhance collaboration in scientific research with other countries and international organizations to promote the sharing of knowledge and technology. 2) increase efforts in cultivating research talent to elevate the overall competence of researchers. 3) raise investment in research funding to support basic research and innovative projects. 4) establish a mechanism for rewarding research achievements to stimulate the enthusiasm and creativity of researchers. 5) establishing sound ethical norms for research and reinforcing ethical education for researchers. This study has some limitations: It relied solely on paper data; The research did not conduct a discipline-specific analysis. In future research, exploring a wider array of data types and concentrating on specific disciplines could enhance the precision of evaluating research contributions from different countries.