Abstract Improving the quality of clinical training requires provision of suitable educational environment and one of its requirements is determination of the stress-inducing factors. The present research was carried out to explore these factors from the viewpoint of students of nursing school. This research was a descriptive study. The samples included a total of 230 students who had passed at least one credit of clinical training and had been selected through convenience sampling. Based on the research results, the most tension-inducing area was related to the unpleasant emotions area, clinical experiences, unpleasant feelings, educational environment and interpersonal relationships, respectively. Throughout clinical training processes, students of different medical fields face a great deal of tension-inducing factors. The identification of these factors could play a significant role in reducing the amount of tension among them.