The article discusses several theoretical characteristics in the development of health economics. Particularly, the need of adequate health financing to implement sector functioning in satisfying the needs of population in medical services is emphasized. The consideration is given to the specificity of medical needs and conclusion is made that particular conditions are to be established for adequate resources support of public health system. The changeable health needs of population can be comprehensively considered only in the public health system with flexible accounting of this kind of changes as related to the health services with operational bringing the amount of financial flows in correspondence with the mentioned alterations.