<p>Using a sample of 285 participants (N_{<i>children</i>} = 95; N_{<i>father</i>} = 95; N_{<i>mother</i>} = 95) from 95 nucleus families, this study employed person-centered and variable-centered approaches to identify parenting style profiles in contemporary China. The study also aimed to investigate the impact of these parenting styles on adolescents’ interpersonal relationships, exploring the underlying multi-level mechanisms. Four latent profiles of parenting styles were identified. Positive parenting (paternal and maternal warmth and authority) had a significant and positive impact on adolescents’ relationship satisfaction, whereas negative parenting (paternal and maternal control and authoritarianism) had a significant and negative impact on interpersonal competence. At the family level, adolescent-reported family function mediated the link between multi-informant parenting styles and adolescents’ interpersonal relationship outcomes (i.e., relationship satisfaction). At the child level, adolescents’ emotion regulation mediated the relation between parenting styles and their interpersonal relationship processes (i.e., interpersonal competence). These results contribute to our understanding of the complex dynamics between parenting styles, family functioning, emotion regulation, and adolescents’ interpersonal relationships.</p>