This study conducted a questionnaire survey of 300 medical staff in L City on policy awareness， perceived value，and diagnosis and treatment behavioral norms after the Diagnosis - Intervention Packet（DIP） reform in October - November 2023 using a convenience sampling method to explore the impact of policy awareness and perceived value on medical staff’s diagnosis and treatment behavioral norms after the DIP reform. Multifactor linear regression and Bootstrap methods were used to test the mediating role of perceived value on the relationship between policy awareness and diagnosis and treatment behavioral norms. The results showed that medical staff scored（19.24±5.87）for policy awareness，（42.99±12.48）for perceived value，and （31.25±6.06）for diagnosis and treatment behavioral norms. Multifactor linear regression analysis showed that medical staff’s policy awareness and perceived value positively predicted diagnosis and treatment behavior. In addition，Bootstrap results indicated that perceived value partially mediated the relationship between medical staff’s policy awareness and diagnostic and treatment behavioral norms，with a mediating effect of 58.06% . Therefore，the higher the medical staff’s DIP reform policy awareness score，the higher the perceived value of the policy，further regulates the norms of diagnosis and treatment behaviors.