本研究的目的在探討高職學生智慧型手機的使用行為、依賴傾向與人際互動的現況及其之間的關聯性。本研究採問卷調查法，以臺中市高職學生為研究對象，使用「高職學生智慧型手機使用行為、依賴傾向與人際互動關係問卷」為研究工具。問卷資料以描述統計、t考驗、單因子變異數分析、卡方考驗、皮爾森積差相關等方法進行分析。研究結果顯示臺中市高職學生智慧型手機的持有率高、使用頻率高，手機使用行為偏重娛樂及聯繫兩大功能。男生使用手機次數較多，女生使用手機聯繫功能較多；一年級偏好訊息蒐集功能。三年級手機依賴傾向較高。女生人際互動優於男生；一年級在部份人際互動層面的表現較好。手機聯繫功能的使用行為與心理焦慮及同儕互動有低度相關，但學生手機依賴傾向與人際互動之間沒有顯著相關。高職學生智慧型手機使用頻率雖高，但整體而言並沒有明顯的手機依賴傾向，也不影響其人際互動關係。

The study aimed to realize the correlations among smartphone use, smartphone dependence and interpersonal relationships of vocational high school students. About 730 subjects from 6 vocational high schools in Taichung were asked to fill out the ＂Vocational High School Students' Smartphone Use Behavior, Smartphone Dependence and Interpersonal Relationships Questionnaire＂. All the data gathered were analyzed by descriptive statistics, independent sample t-test, one-way ANOVA, x2, and Pearson's product-moment correlation, in SPSS Statistics. Over 90 percent of vocational high school students in Taichung possessed smartphones of their own and utilized them frequently. The most frequently-used and favorite functions in a smartphone were those for communication and entertainment. Although around 20 percent of the students were at a higher risk of smartphone dependence due to a longer period of time spent on smartphones, vocational high school students in Taichung had no obvious tendency toward smartphone dependence as a whole, and most of the students were satisfied with their interpersonal relationships. Male students had higher frequency of smartphone use, while female students used communication functions more frequently. The freshmen preferred and engaged more in functions for ＂information seeking＂ or ＂Internet surfing＂, while the seniors had higher tendency toward smartphone dependence. In addition, female students had more satisfactory interpersonal relationships than male students, and the freshmen had better performance in part aspects of interpersonal relationships. The use of ＂communication functions＂ was slightly correlated with ＂smartphone separation anxiety＂ and ＂peer group interactions＂. But on the whole, no significant correlation between smartphone dependence and interpersonal relationships showed. Vocational high school students in Taichung did use smartphones frequently. However, they had no obvious tendency toward smartphone dependence overall, and had satisfactory interpersonal relationships as well.