Objective　To explore whether the professional commitment of nursing undergraduates was affected and changed during the COVID-19 epidemic. Methods　Three surveys were conducted on all nursing undergraduates in the school of nursing of a comprehensive university at different stages before and during the epidemic. Three surveys all adopted College Students' Professional Commitment Survey Scale. SPSS 23.0 was used for descriptive statistics and ANOVA analysis. Results　The overall scores of professional commitment in the three surveys were (3.54±0.55)

(3.42± 0.57) and (3.57±0.68)

all of which were above the average level

with little change. There was no statistically significant difference in the mean scores of professional commitment among the three surveys (F = 2.803

P = 0.062). In all dimensions

except ideal commitment (F = 0.966

P = 0.381)

affective commitment (F = 3.502

P = 0.031)

normative commitment (F = 34.791

P < 0.001) and continuance commitment (F = 7.632

P = 0.001) all had significant statistical significance. Conclusion　The change of professional commitment of nursing undergraduates during the epidemic was not significant

but it was affected positively. During the epidemic

the value of nursing was highlighted and the professional identity of nursing undergraduates was enhanced. We should vigorously carry forward the great anti-epidemic spirit

and make good use of anti-epidemic materials to carry out students' professional ideological education. At the same time

vocational spirit

knowledge of professional prevention and protection and specialized nursing education should be strengthened.