With the development of the COVID-19, more and more countries have paid little attention to it to attach great importance to it. Among them, China has been committed to China's public health and international health. First, China's strict prevention of epidemic situation use; Second, at the international health conference, China and other countries worked out plans together. However, China's epidemic prevention and control still has certain limitations, mainly in two aspects. First, during the epidemic period, the rescue of emergencies was not in place; Second, China's technology still needs considerable development. Therefore, with the help of a scientific analysis model, this paper makes a comprehensive study on the role of China in public health. The prediction of the analysis is extracted from the methodological system suitable for public health system research (Chinese health resources lichengyue, etc.), An empirical study on the dependency structure and Risk Spillover Effect between China and the global stock market under the impact of the COVID-19 based on msgarch EVT copula model (Journal of Shanghai Business University, Su Zhi, etc.) and public crisis and individual self-education awakening: Humanistic evidence for the prevention and control of the COVID-19 epidemic (Journal of Hebei Normal University, tianyangyi). According to the development of COVID-19, these three articles have launched a series of discussions and studies around the theoretical and practical problems to be solved in the construction of public health system, and summarized the corresponding methods. The conclusions of this paper are within the scope: (1) through the policy comparison between China and other countries, it is concluded that China attaches great importance to the epidemic situation. During the epidemic period, China promotes the preventive role, highlights the style of a big country, and plays a decisive role in the international health organization. (2) Even if China has some shortcomings, it is already making efforts to improve and go hand in hand with other countries.
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