摘要：Nursing is a health discipline based on philosophy, theory, research and practice. The theories shed light on the formation of knowledge of this health discipline, the determination of research methods, the realization and application of the research process systematically. Theories are very important in determining the problem, how the problem will be solved and how this solution will be transferred to the application. In order for a knowledge to be scientific, it must be based on systematic foundations. In order to develop a professional nursing profession and education, undergraduate and graduate education should be theory based. Professionals should understand the theories in undergraduate education and internalize them, do theory-based research in graduate education, should try theories through research and develop new theories in doctoral education. In this way, the scientific foundations of the nursing profession will be strengthened. In this review, information about the use of theories in nursing research, the importance and limitations of the use of theory are presented.
