This study aims to investigate the current status and interrelationship of the elementary school teacher positive leadership, ICT use and the student academic optimism. This study adopted questionnaire survey. Questionnaire pertaining to the above three variables were editing by the researcher, and administered to a sample of sixth-graders from selected elementary schools in Taoyuan City, Hsinchu County, Hsinchu City and Miaoli County. There were 687 returned questionnaires with valid responses from 801 questionnaires and the return rate of 94.9%. The researcher conducted factor analysis, reliability analysis, descriptive statistics and structural equation modelling (SEM) for data analysis. The findings based on the results of the research are as follow: The students' perceptions toward teachers' leadership belongs to high level. The students' perceptions toward academic optimism belongs to high level. The students' perceptions toward the use of ICT belongs to "middle-high" level. It is mutually influential among the three variables. Teachers' positive leadership has significant direct effect on students' academic optimism, but the effect is also enhanced when the partial mediated by the use of ICT.