網路閱讀已成為青少年學習的重要途徑，本研究旨在探討國中生網路閱讀行為和學習成效之關聯。透過問卷調查法，調查新北市1,021位國中學生網路閱讀行為的概況，深究國中生網路閱讀行為和學習成效之間的關聯。 本研究主要發現： 一、新北市國中生的網路閱讀行為以「網路交誼」層面的使用頻率最高，「生活休閒」層面次之，「教育學習」層面使用頻率最低。 二、父母持「支持鼓勵」態度的國中生，網路閱讀行為明顯高於「自由放任」者、「嚴格禁止」者。 三、國中生「教育學習」層面的網路閱讀行為使用頻率越高，其學習成效較佳。 四、國中生網路閱讀行為與國文科學習成效相關程度最高，與數學、自然科學習成效相關程度較低。 Online reading has become an important way for young people to get information from internet. This study aims to investigate the relationship between online reading behaviors and learning effects among junior high school students. The study designed questionnaire as a research tool and collected the data from 1,021 junior high school students in New Taipei City. To determine the relationship between online reading behaviors and their learning effects, this study applied correlation and regression analysis to test the collected data. The findings are listed as follows: 1. Regarding to the online reading behaviors in junior high school students, most of students engage in online chatting, then entertainment. Only few of them for learning new information. 2. Students’ online reading behaviors have shown significant difference in parents’ attitudes. Parent’s encourage group has got more online reading behaviors than do the parents prefer not to interfere or forbid group. 3. The more frequent the junior high school students engage in online reading as learning new information, the better their learning effects are. 4. The online reading behavior is most relevant to Chinese and less relevant to math and science in junior high schools.