在網路普及的環境中,國中學生網路遊戲成癮的情形嚴重,若未能幫助戒癮,則造成學生忽略課業、價值觀混淆、人際疏離、逃避社會責任、影響人格發展之嚴重影響。本研究應用計劃行為理論以預測網路遊戲戒癮意向、探討主觀規範、態度、知覺行為控制對國中生網路遊戲戒癮意向的影響,並瞭解「自我認同」在主觀規範、態度、知覺行為控制影響戒癮意向扮演的角色。 根據536份有效問卷分析,本研究發現:主觀規範、知覺行為控制能有效影響網路遊戲戒癮意向,尤其主觀規範影響程度最強。此外,自我認同可以左右國中生的網路遊戲戒癮意向,並可調節主觀規範對網路遊戲戒癮意向的調節效果,且在不同的模式分析下可以獲知,自我認同可直接影響國中生的網路遊戲戒癮意向,此意味要協助國中生對網路遊戲戒癮,首先必須改變學生的自我認同。 As the Internet prevails, junior high school students have serious addiction to internet games. Without abstinence, they will neglect the study, develop wrong values, distant interpersonal relationship, and avoid social responsibility. It significantly influences their development of personality. This study applied the Theory of Planned Behavior to predict abstinence intention of internet games, and explored influence of subjective norm, attitude and perceived behavioral control on junior high school students’ abstinence intention of internet games. It attempted to understand the role of “self-identity” in the relationship between subjective norm, attitude, perceived behavioral control effect abstinence intention. According to analysis on 536 valid questionnaires, this study found that subjective norm, and perceived behavioral control effectively influence abstinence intention of internet games. Subjective norm is particularly influential. In addition, self-identity influences junior high school students’ abstinence intention of internet games directly, and moderates the relationship between subjective norm and abstinence intention of internet games. Moreover imformed by analysis in different models, self-identity can effect the junior high school students’ abstinence intention of internet games.It means that in order to help junior high school students abstinence from the internet games,the priority is to change students’ self-identity.