This article presents a case report on the application of attachment theory to address interpersonal problems among college students. The client, Xiaoli (a pseudonym), a 23-year-old secondyear graduate student, sought counseling due to social anxiety, emotional stress, and challenges in interpersonal interactions. Informed by attachment theory, the counselor conducted 14 individual sessions, establishing a safe and stable therapeutic relationship. This approach helped Xiaoli explore, identify, and repair early insecure attachment patterns, providing corrective emotional experiences. Over time, this process facilitated adjustments in her internal working models, enhanced her sense of self-worth, and led to the gradual development of a secure attachment style. As a result, Xiaoli’s social difficulties significantly improved. The report offers a detailed analysis of the strategies, challenges, and reflections encountered during the counseling process, with the goal of providing practical insights based on attachment theory for counselors addressing similar interpersonal problems among college students.