Purpose: This study investigated the correlation between person-centered care (PCC) and nursing service quality of nurses in long-term care hospitals. Methods: The subjects were 114 nurses working in 8 long-term care hospitals. Instruments for evaluating PCC and nursing service quality were used. The data were analyzed by descriptive statistics, two samples-test, one-way ANOVA, Pearson`s correlation and Multiple regression. Results: The mean of PCC was 3.25±0.45 out of 5 and the nursing service quality was 3.87±0.40. There were significant differences in PCC in terms of age and income satisfaction, the application of their opinions, the satisfaction of hospital managers, administrators and nurse managers. There were significant differences in nursing service quality according to age, position, the satisfaction of hospital managers, administrators and nurse managers. Nurses` PCC showed a significant positive correlation with nursing service quality. Factors influencing nursing service quality included PCC, their position and age and the most influencing one was PCC. Conclusion: This study suggests that the PCC is the strongest affecting element to the quality of nursing service in long-term care hospitals. Therefore, the strategies to improve the practice of person-centered care should be carried out to enhance the quality of nursing service.