Purpose: The purpose of this study was to identify the influences of nursing students perfectionism tendencies and their perception of instructor caring on incivility experienced by nursing students during clinical practice. Methods: A descriptive correlational study was conducted. The participants were 244 nursing students from five universities in B city. Data were analyzed using an independent t-test, ANOVA, Pearson’s correlation coefficient, Scheffé test and a stepwise regression analysis. Results: The mean score for incivility in nursing students was 2.61 out of 5 points. The explanatory power of the model for incivility was in nursing students 52.8% of the variance in training in student’s university hospital (β=-.15, p=.002), total period of clinical practice (β=.17, p<.001), confidence through caring (β=-.23, p<.001), respectful sharing (β=-.15, p=.005), supportive learning climate (β=-.15, p=.005), self-oriented perfectionism (β=.14, p=.004), and socially prescribed perfectionism (β=.18, p<.001). Conclusion The research results suggest that instructor caring is an important factor in regard to the incivility of nursing students. Organizational efforts and institutional devices will be needed to improve the incivility in clinical environments. By communicating with students and showing them respect, clinical nurses will help nursing students cope with incivility and recognize the clinical practice education environment positively.