The purpose of the article is to present a discourse of public health ethics, as a social action, and research development. The following problematic questions have been framed to achieve the above purpose: what are the reasons for multiple meanings of public health concept? How is the concept of public in the context of pubic health understood? What are the possible approaches to the analysis of public health ethics? What are the major differences between public health ethics and healthcare ethics? The first part of the article makes an analysis of multiple meanings of the concept of public health. The second part addresses the concept of public in the context of public health. In the third part, there are analytical approaches to public h...