The purpose of this study was to explor the correlation among teaching styles of the mathematics teachers perceived by junior high school students and Mathematics academic emotions. The main research tool was ”Perception of Teaching Style of The Mathematics Teachers Scale for Students and Mathematics Emotion Scale.” The effective samples selected in the study, 442 junior high school students, were selected from Jiankang Junior High School in Tainan City, and studied in grade 8 in 99th academic year. In data processing, the statistical methods used to analyze the data were the average, standard devitation, one-way ANOVA.There conclusions were summarized as following:1. The highest perception of teaching styles of The Mathematics Teachers perceived by the junior high school students was democracy.2. The students' Mathematics academic emotion was highest by the proud score.3. For the junior high school students, the teaching style of the Mathematics teachers ”democracy” was positively correlated to all the positive Mathematics academic emotions.