Öz Health, the center of social welfare is also an important element of economic and social development. As social welfare will be possible with healthy individuals, health services should be provided to all individuals in the society within the framework of the principle of efficiency and equality. Therefore, effective delivery of health services brings about an efficient functioning health sector as well as improving the health level of the individual and society. At this stage, it is necessary to deal with the supply and demand elements, which are effective tools in the examination of the sector, and to plan health services and resources, to organize the system and to formulate the policies according to the results obtained by working regionally and nationwide in this direction. However, in order to carry out investigations in the health sector, the factors affecting the demand should be identified and put forward. Therefore, in order to achieve maximum improvement in the field of health in terms of individual and society, it is important to conduct analysis for the demand for health care services. In this study, first of all, the demand for health care services is explained conceptually, then the models developed for demand are discussed and the utility maximization model developed in this direction is discussed. Finally, the studies discussed in the literature are examined in detail. The aim of this study is to explain the demand for health care services and the model of utility maximization from the models developed in this direction and to help the studies on this subject by examining the literature about the model.