Constructing a scientific, standardized and reasonable dynamic adjustment model of medical service price has important reference value for the dynamic adjustment of medical service price in public hospitals. In view of the current situation at home and abroad, the authors analyzed the influencing factors of such adjustment, and constructed a dynamic adjustment model of medical service price, referring on the resource-based relative value scale theory. This model could calculate the intrinsic price of individual medical services, taking into full account the basic human resource consumption and time consumption, as well as the technical difficulty and risk degree of such services. On such basis, the economic development and price level of individual regions were integrated into the model to calculate the extrinsic price of these services. Taking the debridement(suture) service of a hospital as an example, this model was used for empirical research. It was estimated that the extrinsic price of a debridement(suture)(small) service was 54.82 yuan, that of a debridement(suture)(medium) service was 104.34 yuan, and that of a debridement(suture)(large) was 142.93 yuan. The price gap between the actual price and these estimated prices was 10.18 yuan, -26.34 yuan and -51.93 yuan respectively. This research proved that the model could be helpful to sort out the price ratio relationship and better reflect the technical labor value of medical workers.