This article attempts to analyze the rational or understandable factors in suicidal behaviors from psychodynamic perspective based on real cases. Suicide is utilized by subject consciously or unconsciously as an expressive instrument among the college students to flee away from unbearable pain, to maintain the relationships with inner self?-objects, or to represent aggression and revenge to prime objects. Suicide is not an irrational impulsion, but a limited option which is made by dysfunctional self in a hopeless situation.