Abstract:Objective To investigate the setting mode, personnel allocation and function assumption of public health departments of medical institutions in Z City from November to December 2021 to analyze the rationality and necessity of establishing them. Methods By random sampling, the public health departments of 16 medical institutions in Z City were selected for status quo investigation on them. Results There were 10 hospitals with the independent public health departments, of which 6 hospitals were affiliated with the medical department, hospital infection department and health management department. The number of personnel allocation and their education levels of public health departments in tertiary hospitals were statistically higher than those in secondary hospitals(P＜0.01). The functions of public health departments were mainly focused on the management of diagnosis and treatment for infectious diseases, the management of chronic non-infectious diseases and the emergency disposal of public health emergencies, with a commitment rate of more than 80%. There was no significant difference in the commitment rates among the different medical institutions（P＞0.05）. Conclusion The setting of public health departments of medical institutions in Z city are generally in good ，but there is still room for improvement in talent allocation and function commitment.