This study aims to analyze the concept of nursing surveillance among nurses caring for patients in acute care hospitals in Korea. The conceptual analysis was conducted using the hybrid model proposed by Schwartz-Barcott and Kim. In the theoretical phase, the attributes of nursing surveillance were explored through a literature review. In the fieldwork phase, the attributes of nursing surveillance were derived by analyzing interview materials. In the final analysis phase, nursing surveillance attributes and the related factors were integrated and confirmed. The attributes of nursing surveillance were systematic assessment, pattern recognition, the anticipation of problems, effective communication, decision-making, and performing nursing practice. Based on the theoretical basis of the nursing surveillance concept, this study identified the nursing surveillance concept as perceived by Korean nurses, and examined strategies to promote nursing surveillance.