Objective: The paper attempts to evaluate the impact of previous national centralized drug procurement policies on the use of drugs in hospitals.Methods: The outpatient and emergency treatment data is retrieved from a tertiary comprehensive hospital in Beijing from June to August 2018 (before the VBP, volume-based procurement), June to August 2019 (after the first batch of VBP), June to August 2020 (after the second batch of VBP), January to March 2021 (after the third batch of VBP) and June to August 2021 (after the fourth batch of VBP), and EXCEL is applied to the data analysis.Results: With the implementation of the previous centralized procurement policies, the proportion of users of successful bidders has increased year by year, reaching a maximum of 21.36%. The total cost of medicines of winning bids and the same ingredients has achieved a cumulative decrease of RMB 25151300, a decrease of 60.27%.Conclusion: The policy of centralized drug procurement and use promotes the use of winning products and reduces the burden of drug costs.