Objective: The purpose of this study is to design the web-based dialogue expert system for preventing and managing of habitual substance disorders in adolescents.

Methods: Research process includes the requirement analysis, making of questionnaires, actual survey, and its analysis. Based on the analysis, we designed the web-based dialogue expert system.

Results: The habitual substance disorders in adolescents are variable. Our system for managing habitual substance disorders contains the diagnosis of alcoholism, nicotinism, and narcotism. And it analyzes the facts of them based the questionnaires and answer. As the results of the analysis, main reasons in order of the power of influence are belief, will of refusal, personal characteristics, family environment, and psychological personality. Our system suggests the customized solution to conquer that for each adolescent. Moreover, our system also includes the history tracking mechanism to manage the status of each teenager constantly and to make the survey and analysis information. Available athttp://www.baejy.com/yebang/

Conclusion: With our system, young boys and girls can know their seriousness of alcoholism, nicotinism, and narcotism. And they can get all possible helps through our system. This system will be the interactive and familiar way that anyone all over the world can use for overcoming problems.