It is the fiercely criticized social issue and social phenomenon in Mainland and Taiwan that children and teenagers run away from home and are abducted.By her own experience of social work practice in Taiwan and her field investigation on the work of jointly searching missing children and teenagers both in Mainland and in Taiwan,the author has made a comparative study of the issue in Mainland and Taiwan,and suggests that we should improve our work for jointly searching missing children and teenagers both in Mainland and in Taiwan by taking examples from Taiwan's experience.