目標：探究「兒童版飲食態度量表-26題」（ChEAT-26）在台灣國小高年級兒童使用的最佳切點，期有效應用以降低本土飲食障礙之年輕與嚴重化。方法：採兩階段設計進行：1.邀請願意配合研究之南台灣四所國小，先以「ChEAT-26」對各校五、六年級學生共1859位進行集體施測；2.再依量表總分並考慮正異常組人數相當之原則，按比例以分層隨機抽樣方式，在四校共抽取到380人，進一步取得家長同意書人數為276人（72.6%），安排進入第二階段診斷性晤談。結果：針對276位兒童進行第二階段診斷性晤談後，發現有5位學生診斷為陽性。以ROC 曲線分析發現，當切點為16.5時，「ROC」曲線下面積（AUC）為0.704、敏感度80%、特異度44.3%乃較佳之切點；且因「ChEAT-26」為整數計分，亦即在實務上，將17分設為切點更方便應用。結論：「ChEAT-26」在台灣國小高年級學生使用時，飲食障礙高危險群之篩選切點以17 分為宜，文末針對結果進行討論與建議。

Objectives: The optimal cutoff point of the 26-item Children’s Eating Attitude Test (ChEAT-26) used in grade 5 and 6 elementary school students was explored in Taiwan with the aim of effectively screening and managing eating disorders. Methods: A two-stage design was adopted: (1) four elementary schools willing to participate in the research were enrolled, and the ChEAT-26 was applied in 1,859 students in grades 5 and 6; and (2) 380 people were selected through stratified random sampling, and 276 people (72.6%) were enrolled in the second stage of diagnostic interviews after parental consent was obtained. Results: The second-stage diagnostic interview with 276 children revealed a positive result for 5 children. The most suitable cutoff point was 16.5, where the area under the receiver operating characteristic curve, sensitivity, and specificity were 0.704, 80%, and 44.3%, respectively. Furthermore, because ChEAT-26 scores are integer scores, it is more convenient to use 17 as the cutoff point when applying. Conclusions: When the ChEAT-26 is used for senior students in Taiwan’s elementary schools, the cutoff point for screening high-risk groups for eating disorders is 17. The article concludes with a discussion and recommendation regarding the optimum ChEAT-26 score.