  The study of US-China relations has always been a crucial topic in our
economic development [4][5][7], and the US presidential election plays an
integral role in shaping these relations. The presidential election is held
every four years, and it is crucial to assess the impact of the 2020 election
on China to prepare for the potential effects of the 2024 US presidential
election on the Chinese economy [8][16][20]. To achieve this, we have gathered
statistical data from nearly 70 years and analyzed data related to the US
economy. We have classified the collected data and utilized the analytic
hierarchy process [1][2][3] to evaluate the President's policy
implementation.This approach allowed us to obtain a comprehensive ranking of
the indicators [6][9][11][33]. We then quantified the index data and employed
the entropy weight method to calculate the weight of each index data. Finally,
we used the weighted total score calculation to evaluate the economic status of
the United States in a hierarchical manner after the election of Presidents
Trump and Biden [15][18]. We optimized the index system by incorporating
additional dimension indexes such as "foreign policy". We then crawled China's
specific development data from 1990-2020 and substituted it into the model for
analysis and evaluation. This enabled us to obtain detailed quantitative index
data of the degree of influence [10][12][14]. To address China's shortcomings
in science and technology innovation, we recommend strengthening economic
cooperation with developed countries, diversifying market development, and
actively expanding the domestic market through feasible solutions
[13][16][23][36].
