Purpose: The purpose of this study was to investigate provide basic data for improving patient safety in nursing homes in Korea by measuring the patient safety culture of nursing homes and understanding its influencing factors. Methods: This study is a secondary analysis of a descriptive research study using data from development and validation of the Korean patient safety culture scale for nursing homes. A total of 982 cases were analyzed using the SPSS Statistics 20 program. Results: For the safety culture of the patient, there was a significant difference based on the size and location of the facility. For the degree of patient safety, age, education, occupation, marital status, and the size of the nursing home were significant factors. Patient safety culture and the degree of patient safety had a positive correlation. The regression model of the degree of patient safety was significant (F=20.73, p<.001) and the explanatory power of the model was 27.4%. Conclusion: The study results indicate that patient safety culture is a factor influencing safety of elders in nursing homes. To improve patient safety for nursing homes in Korea, continuous evaluation and improvement projects need to be done at a national level.