The purpose of this study is to understand the compulsory treatment for exhibitionism by using empirical legal study and Delphi Technique. By using empirical methods, the researcher tries to understand how practitioners treat sexual offenders and what their opinions are. The findings are listed as the following: first, the compulsory therapy in Taiwan is not effective enough to change the exhibitionisms; second, there were not enough manpower to help sex offenders; and third, the deficits of compulsory treatment could be offset if practitioners and scholars cooperate. Judging from the above-mentioned findings, the researcher concluded with a few suggestions: amend the current criminal law, as well as classify sex offenders and exhibitionisms.