Abstract: ObjectiveTo study adult attachment,internet dependence and their relationship in college students.MethodsTotally 600 students selected with cluster sampling from colleges in Zhejiang province were interviewed using Chinese Internet Addiction Scale's Revision(CIAS-R)and Experience of Close Relationship(ECR).ResultsThe scores of attachment avoidence and attachment anxiety in the students were 3.40±0.82 and 3.77±0.85.Of all the students,there were 353(64.5%)nomal internet users,58(28.9%)internet dependence,and 36(6.6%)internet addiction.The average scores of attachment avoidence,time management,and internet dependence were 3.30±0.81,8.46±2.52,and 43.03±8.73 for the male students and 3.48±0.81,7.71±2.14,and 41.63±7.25 for the female students,respectively,with significant difference between different gender(P<0.05 for all).There was a positive correlation between adult attachment and internet dependence.ConclusionThe internet addictionin is prevalent among college students.The attachment anxiety is a predictor of internet dependence.