Objective To investigate the current situation of mobile phone addiction among nursing undergraduates in Wuhan,and to analyze influencing factors.Methods 240 nursing undergraduates from three universities in Wuhan were selected from January to April 2015 by convenience sampling method,and were evaluated about their situation on mobile phone addiction by questionnaire of mobile phone addiction tendency scale.Single factor analysis and Logistic multiple regression analysis were used for the influencing factors.Results 240 questionnaires were handed out with 232 retrieved and with effective rate 96.67％.Among the 232 nursing undergraduates,mobile phone addiction rate was 30.60％,with scores in the mobile phone addiction tendency scale (48.33 ± 14.23) points.It was revealed in the single factor analysis that differences appeared whether they were in single-parent family,the only child in the family,from a single-parent family or in a love relation (x2=7.45,4.63,12.59;P＜0.05);it was revealed in the Logistic regression analysis that influencing factors included whether they were in single-parent family,the only child or in a love relation.Conclusions Mobile phone addiction rate is relatively high among nursing undergraduates,with those who are in single-parent family,the only child or in a love relation more likely to be addicted.Guidance and education should be strengthened to nursing students,especially to those who are in single-parent family,the only child and who are in a love relation.