Objective To investigate the current situation of transition shock of undergraduate nursing students and ex-plore influencing factors:an analyze of challenges in the transformation process to inform targeted intervention programs.Methods A total of 256 full-time undergraduate nursing interns from 3 colleges and universities in Anhui Province were selected as research objects by convenient sampling method.The study was conducted from July 2021 to March 2022.The research utilized the theoretical framework of Meleis transition theory and employed a general data questionnaire,transition impact assessment scale for undergraduate nursing interns,and nursing self-concept scale to collect data.The independent sample t-test was used to analyze gender differences,differences based on place of origin,and whether the student was the only child.Variance analysis was used to compare the transformation impact scores,such as reasons for filling out voluntary applications and academic performance in school.The multiple step-up regression method was utilized to analyze the influencing factors of the transformation impact experienced by undergraduate nursing students.Results The mean transition impact score for undergraduate nursing students was found to be 48.51±1.71.Additionally,the pro-fessional self-concept score was determined to be 82.56±9.77.Statistical analysis showed significant differences in the transformation impact scores based on various factors,including reasons for volunteering,professional satisfaction,pre-job training duration,school concern,and post-graduation career planning(P<0.05).Furthermore,Pearson correlation analysis demonstrated a negative correlation between the total transformation impact score of undergraduate nursing interns and the total professional self-concept score(r=-0.405,P<0.01).Multiple stepwise regression analysis identified pro-fessional satisfaction,pre-job training duration,the level of school support during the internship,and the professional self-concept of nursing students as significant factors influencing the level of transition impact experienced by undergradu-ate nursing students(P<0.05).Conclusion The impact level of transition experienced by undergraduate nursing students is moderately high.To efectively manage nursing students and mitigate the impact level of their transition,sev-eral measures can be implemented.These include enhancing their professional concept,increasing the level of school support and concern,improving professional satisfaction,and appropriately arranging pre-job training.