The purpose of the study was to explore the perception and experience of the junior high school counselors about the adolescent clients' characteristics, counseling problems, and the way of counseling. Thirty-three research participants were from three Normal Universities' Counseling and Guidance Program in Taiwan and were graduated at least for three years. They all were working as school counselors and were divided into seven groups to participate the group interview. All collected data was analyzed following open coding strategy. The research findings were divided into three parts. The first part focused on the characteristics of adolescent clients which covered verbal expression, cognitive development, sexual development, emotion and behavior, less future-oriented, and seeking being affirmed and loved. The second part focused on the types of the client's problem and the related factors affecting the problem. The third part focused on how the counselors thought about school counseling in junior high schools and how they concerned the type of clients and the school environment to adjust the way of conducting counseling. Further from counseling relationship, counseling goal, counseling techniques, system viewpoint, multi-culture consideration, and referring to explain how the counselors counseled clients. Finally the researchers based on the research findings to provide suggestions.