The term “Smart hospital” is a very comprehensive concept and it is not considered as it should be among researchers because it is more than using a smart tool in a hospital. This study was designed to conduct a review about smart hospitals. In this systematic review, 808 studies were identified using keywords through searching in the PubMed, Science Direct, Embase, Scopus and IEEE databases Overall, after applying the inclusion and exclusion criteria (705based on abstract and titles and 35after reading full texts) and removing duplicates (43), 25 studies were included in this review. Geographically, most of the articles were from Asia (60%). The highest number of publications was observed in 2012 and 2020. A multidisciplinary team was involved in 72% of the researches and 68% were conducted in more than one research center. Most articles have been published in Q1 quality journals (48%) and high-income countries accounted for the largest percentage (56) and 32% of them were aimed at patient care. RFID was the most used technology and 66.67% of them were about the implementation of a smart hospital. It should be noted that development or implementation of a smart device in a hospital should not be considered as implementing a smart hospital and it is far beyond that.