This study aimed to determine the general self efficacy levels of students studying for undergraduate degree in nursing and to examine the relationship between skills development and self efficacy. The research was conducted in a descriptive way. The sample consisted of 100 students. Data were collected via the use of a student introduction form, Self-Efficacy Scale (SES) and an intramuscular (IM)injection procedure checklist; the forms were filled in by 100% of the nursing students. The mean general self-efficacy score of the students in the study was high. the self-efficacy levels of our students were high, and no correlation was observed between personal characteristics and self-efficacy; therefore, education in injection technique had the same influence on all students' self-efficacy.