本研究從相關文獻與問卷分析結果得到電子商城的關鍵成功因素，經由相關文獻分析與專家訪談，確認電子商城的成功因素為資訊品質、系統品質、服務品質、使用者滿意、使用者使用情形、商品特性、商品價格、交易安全性與企業特色。本研究採用問卷調查法，以敘述統計、信度分析及迴歸分析做為工具。研究結果顯示，前述成功因素經過複迴歸分析得到系統品質、資訊品質、服務品質與商品特性等4項對電子商城經營滿意度具顯著相關。另外，系統品質與商品特性對於郵政商城經營滿意度也具顯著相關，此二項因素與整體分析結果相符，前述研究結果可供郵政經營電子商城參考依據。 In this study, critical factors of E-malls’ success are collected through literature and questionnaire analyses. Through literature review and expert interview, it is confirmed that key factors of E-malls’ success lie in information quality, system quality, service quality, user satisfaction, user usage, product features, commodity prices, transaction security and enterprise features. Multiple tools such as questionnaires, descriptive statistics, reliability analysis and regression analysis are also employed herein. By regression analysis on the above factors of success, it is found that system quality, information quality, service quality and product features have a significant relationship with the operational satisfaction of E-malls. System quality and product features are also significantly related to the Postal E-mall, and hese two factors comply with the overall analysis results. The research findings can be made available as reference to the Chinese Postal Service for their E-mall in the future.