Objective: to explore the medical services, project cost and price change trend and internal relations. Methods: weighted commodity price index method was applied to medical services, build up the cost of medical service project and price index model. Results: by means of the implementation of the classification of medical service projects, cost accounting, cost research, price research, index calculation, result analysis and so on, preliminary findings medical service project cost and the price index, internal relations and trends. Conclusion: on the basis of this study for the establishment of the medical service price dynamic adjustment mechanism to provide the reference and basis