近年來,資訊科技發展帶來生活的便利,使得教材與媒體的運用展現多元化面貌,教學上使用數學電子教科書已是重要趨勢。然而,教育相關單位尚未有審查數學電子教科書的品質保證機制。實務上,學校在評選教科書前有必要建立電子教科書品質衡量指標,作為評估與改善數學電子教科書品質的依據。本研究目的在探究數學電子教科書品質要素,採用Kano二維品質模式做二維品質屬性分類,分析數學電子教科書品質改善項目。研究結果顯示使用頻率影響顯著且教師對數學電子教科書的滿意度屬於中上,其中「更新時效性」、「教師編輯的彈性」、「錯誤回報機制」、「人我關係兼顧」多數使用者的滿意度僅普通,數學電子教科書23個品質要素可歸類為17項線性品質、5項魅力品質、1項當然品質,並提出品質改善指標以增加使用者滿意及減少其不滿,擬可供國小教師或數學電子教科書編輯者做為參考,提升數學教科書評選方面的專業知能。 In recent years, the development of the Information Technology makes our life more convenient. Also improve the aspects of teaching materials and media applications. Appling mathematics electronic textbook in teaching is an important trend. However, there is no mechanism for math e-textbook's quality assurance provided by the relevant unit of education . In practice, it is necessary to establish a measuring index, before the selection of textbook, as the basis of evaluating and improving the quality for math e-textbook. The purpose of this research is to probe these quality attributes of elementary math e-textbook and to apply Kano's model to classify those required to be improved. The results of this research show that the use frequency has a significant effect and the degree of satisfaction from the elementary teachers to the mathematics e-textbook is more than average. Of which four the degree of satisfaction of users belong to ordinary: “Updated timeliness”, “The editorial flexibility of teacher”, “Error return mechanism” and “Taking into account interpersonal relationships” . The analysis results of the quality attributes of math e-textbook also show that 17 items are classified as one-dimensional quality, 5 items are attractive quality, and 1 item is must-be quality. Besides, this study applies quality improvement index to increase satisfaction and reduce dissatisfaction of users. It planned to support the grade teacher or mathematics e-textbook editor of primary school as consulting, as the professional knowledge in improving the evaluation for mathematics textbook.