Objective: To fully understand the actual changes in medical service prices in Tianjin, analyze and calculate the medi- cal service price index, and provide a reference basis for adjusting medical service prices. Methods: It collects the usage and income of medical service projects in Tianjin from 2014 to 2021, and calculates the Tianjin medical service price index according to the price index calculation formula, compares and analyzes with indicators such as the Tianjin residents’consumption price index, and com- bines Pearson correlation analysis to explore the impact of the classified price index on the overall situation. Results: The measured medical service price index is relatively reasonable; it can better reflect the trend of medical service price changes; the changes in the categorized price index vary widely, and its changes are closely linked to policies related to health care reform. Conclusion: It is needed to further improve the price index analysis, fully analyze the price changes, and constantly improve the price adjustment and analysis mechanism of medical services in Tianjin.