Amidst rapid digital technological advancement, contemporary university students exhibit three emerging social patterns: online community-building, social stratification, and more clearly defined personal boundaries. These patterns are characterized by instrumental motivations, low-intensity interactions, and polarized breadth of social networks. While catering to individualized needs and reducing social costs, these emerging modalities entail adverse effects such as cognitive narrowing, emotional detachment, and communicative competence decline. Focusing on university students, this study investigates these emerging social patterns, analyzes their features, and uncovers underlying causality, aiming to inform interventions for fostering healthy social engagement.