OBJECTIVE： To establish a comprehensive and multi-angle evaluation model for rational drug use in medical institutions， and to provide support for rational drug use in medical institutions. METHODS： Referring to the phenomenon of irrational drug use and its influential factors in medical institutions， rational drug use evaluation indicator system， which contained 3 evaluation subjects， 6 first-level indicators and 15 second-level indicators， was established on the basis of 360-degree Feedback Method， with hospitals at the same level， superior regulation department and patient as subjects of multi-angle evaluation. At the same time， the linguistic information of vague and uncertain evaluation given by the evaluation subject was comprehensively quantified by Hesitant Fuzzy Sets Theory. The total evaluation score of rational drug use in the evaluated medical institutions was calculated by using the score function formula of hesitant fuzzy number； the level of rational drug use in medical institutions was determined according to the score （the higher the total score， the higher the comprehensive level of rational drug use）. RESULTS： An all-round and multi-angle evaluation model of rational drug use in medical institutions was established. According to the evaluation index system based on 360-degree feedback evaluation method， the evaluation subject and weight of evaluation index were determined， the grade of evaluation index was divided， the hesitant fuzzy numbers of each index were gathered， and the first-level index was weighted. Finally， the total evaluation score of rational drug use in medical institutions was calculated； the examples were set to prove the feasibility of the model. CONCLUSIONS： The established evaluation model for rational drug use in medical institutions based on 360-degree Feedback Method and Hesitant Fuzzy Sets Theory can comprehensively and effectively evaluate the rational drug use in medical institutions， and contribute to standardizing and improving clinical drug use behavior in medical institutions.