This case study is to analyse the behavioral response of a pregnant adolescent girl. Qualitative method was used in collecting data. By means of content analysis the behavioral context of the adolescent girl can be categorized as seeking information behavior, the content of the information can be categorized as following: (1) dealing with expected date of delivery, (2) dealing with labor and delivery, (3) dealing with postpartum care, (4) dealing with maternal work, (5) dealing with self activity. The result of this study can be applied as references for nurses when taking care of adolescent mother. (Tzu Chi Med J 1996; 8: 355-339)