Introduction: Care is the fundamental fact of nursing. In recent years, poor care is discussed frequently in articles and newspapers, however health care providers do not have a common understanding of this concept. Therefore the purpose of this paper was to clarify the concept of poor care in nursing and highlight the importance of tackling this issue. Methods: The concept was analyzed using the 8-step Walker and Avant’s method. The SCOPUS, PubMed, ISI, and Embase databases were searched with the keywords "poor care" and "poor nursing care" in the titles and abstracts of articles. Of 550 sources found in the initial survey, 32 articles were finally included in the study. Results: Poor care attributes include poor evaluation, inadequate or inappropriate patient management, and delay, treating, and referring patients to other departments. These attributes are caused by antecedents of nursing workload, the complexity of patient conditions, inappropriate interactions, insufficient workforce, and educational and organizational factors. Conclusion: Poor care is a general concept that includes undesirable and unacceptable standards for receiving or providing clinical and interpersonal health services. Poor care includes eliminating planned activities or performing unplanned activities that are experienced by the patient, health care workers, or caregivers.