Abstract: Objective To explore the relationship between parent-child attachment，interpersonal sensitivity and self-identity among college students，analyze the mediating effect of interpersonal sensitivity on parent-child attachment and self-identity. Methods In November 2021，372 students from two college in Shaanxi Province and Anhui Province were collected by the stratified cluster random sampling，the questionnaire survey was conducted by the inventory of parent and peer attachment（IPPA），interpersonal sensitivity scale and self-identity scale，and the data were analyzed. Results The scores of parent-child attachment，interpersonal sensitivity and self-identity in college students were （1.81±0.39），（2.39±0.67） and （2.84±0.29）points，respectively. There were statistically significant differences in self-identity scores among students with different parenting style and family structure（all P<0.05）. There were statistically significant differences in parent-child attachment scores among students in different grade，parenting style and family structure（all P<0.01）. There was statistically significant differences in interpersonal sensitivity scores among students with different parenting style（P<0.05）. The parent-child attachment was positively correlated with self-identity（r=0.328，P<0.01），while the interpersonal sensitivity was negatively correlated with parent-child attachment and self-identity（r= -0.157，-0.517，both P<0.01）. The interpersonal sensitivity played a partial intermediate role in the relationship between parent-child attachment and self-identity in college students（β=-0.477，P<0.01），and the mediating role was significant，accounting for 22.9% of the total effect. Conclusion The parent-child attachment positively affects self-identity，and the interpersonal sensitivity plays a partial mediating role in the relationship between parent-child attachment and self-identity.

Key words: Self-identity, Parent-child attachment, Interpersonal sensitivity, Mediating effect