The purpose of the study was to investigate the relationships among codependency, self-emotions and love relationship quality. The sample consisted of 1007 college students (437 males, 570 females) at 7 universities in Taipei, Taiwan. Instruments used in this study included Chinese Codependency Assessment Tool, Self-emotion Scale and Love Relationship Rating Form. Data obtained in this study were analyzed by t-test and Canonical Correlation Analysis. The main findings were 1. There were significant gender differences in codependency and Males had stronger codependency than Females.2. when college students had more codependency, they would have stronger feeling of ” shame” ,“guilty” and weaker feeling of “pride ”. 3. when college students had more codependency, they would confront more conflict and ambivalence , lower intimacy in their love relationship and are less satisfied with their relationship.