本研究以女性為關注對象，進行瘦身行為及其相關因素之探討，希望藉由本研究瞭解臺灣地區女性瘦身行為之現況及女性個人背景因素對瘦身行為的差異性及解釋力，以供健康促進相關單位規劃與實施女性體型意識教育之參考。本研究採調查法進行資料之蒐集，以分層比例抽樣之方式，抽取臺灣新竹地區500位女性為調查對象。取得有效問卷458份。針對調查所得資料分別以描述性統計、單因子變異數分析、t檢定、雪費事後檢定、卡方分析、迴歸分析等統計方法進行分析。研究結果顯示:女性不同個人背景因素在瘦身行為有顯著差異；女性之個人背景因素對瘦身行為具有顯著預測力。根據本研究結果，建議女性應養成良好飲食行為，建立規律運動與量體重之好習慣；從事瘦身行為時，宜慎選瘦身方法，並向專業人員請益，加強瘦身相關知識，以免對身心造成危害並掌握身體自主權，以達理想之體態。

The purpose of this study is to understand and predict the differences of weight-lossing behaviors among women resulting from demographic variables, and to provide reference to health facilitating institutes when developing educational material of women body awareness. This study surveyed 500 women in Hsinchu with stratified random sampling, and was able to retrieve 458 effective samples. The data was analyzed with statistical methods including descriptive statistics, ANOVA, T-test, Scheffe’s post hoc analysis, chi-square analysis and logistic regression. Our result suggested that demographic variables significantly predicted women’s weight-lossing behaviors and caused significant differences. Base on our result, we advice women to develop proper diet plans, regular exercising activities and body weight control. When selecting weight-lossing activities, consult to professional fitness advisors first. Meanwhile, women should fortify relevant fitness knowledge in order to freely control their bodies and to achieve ideal figures.