本研究的目的有二:(1)了解工廠婦女實行乳房自我檢查的情形; (2)探討團體教學課程對工廠婦女乳癌及乳房自我檢查的知識、乳癌及乳房自我檢查的健康信念、乳房自我檢查自信度、乳房自我檢查行為的影響。本研究採準實驗設計法，以兩工廠女性員工為研究對象，經進前測、團體教學課程介入、後測、追蹤期三個階段之後，全程參與的人數共有142人。本研究發現實驗組經過乳房自我檢查教學課程之後，在乳癌及乳房自我檢查的知識、乳房自我檢查的利益性認知、乳房自我檢查的障礙性認知、對乳房自我檢查的自信度、乳房自我檢查的行為上都比對照組有明顯的進步;乳癌的罹患性認知則和對照組無明顯差異。雖然追蹤期實驗組相關知識及健康信念得分有逐漸下降的傾向，但仍優於對照組;實驗組教學課程介入後定期做乳房自我檢查的人數有明顯的增加。根據本研究發現，在推行乳房自我檢查的相關衛生教育課程中，若能加強對乳房自我檢查步驟完整性的了解，降低乳房自我檢查障礙性認知，必能有效的促進婦女實行乳房自我檢查。

The purpose of the research was to examine the effects of a teaching program in the workplace on factory employees' health knowledge, beliefs and behavior regarding breast self-examinaion. Women who attended the one-session class were quasi-experimentally assigned to one of two groups. There were 142 women who went through these 3 stages: Pre-test, post test immediately after teaching class, and follow-up 3 months later. The teaching program improved knowledge, perceived benefit of breast self-examination, confidence in breast self-examination, and skill in the experimental group, and also reduced perceived barriers regarding breast self-examination. Also, during the 3 months of the teaching program, the percentage of those conducting periodic breast self-examination among the experimental group was greater than for the control group. According to this research, it will be much more efficient to make women conduct breast self-examination while enhancing the complete understanding of breast self-examination procedures and reducing the perceived barriers in the related teaching program.