組織在高度競爭的商業環境，莫不或多或少地面臨內外在環境的變遷與挑戰。為了安然渡過這些挑戰，勢必透過推動內部的改革或流程改善，藉以因應世界變革洪流所帶來的衝擊。組織因考量內部有限的資源及時間限制，多以組成專案團隊的方式，來完成這些臨時而非常態性的任務。本研究透過256份樣本，藉以探討在內部管理專案中，其專案成員的專業能力、自我角色期望是否會對其專案成功造成影響，並探討組織承諾是否為專業能力對專案成功及角色期望對專案成功的干擾變數。 研究結果證實：1.專案成員的專業能力對專案成功具有部份顯著影響，且專業能力與組織承諾越高，其專案成功率越高。2.專案成員之角色期望對專案成功具有顯著影響。3.組織承諾無法干擾專業能力對專案成功的影響。4.專案成員之角色期望透過組織承諾干擾作用對專案成功有顯著影響。5.專案成員之不同人口統計變項在專業能力、角色期望、組織承諾及專案成功上部份具有顯著差異 本研究依據研究結果建議組織於未來內部管理專案成員之挑選上，應優先以組織承諾高之已婚、36~45歲、任職於幕僚、行政部門且擁有博、碩士學歷之理階主管，若無完全符合條件之人選，可再依本研究分析結果逐項篩選成員條件。 It is inevitable for any organization to encounter internal as well as external changes and challenges in a highly competitive commercial environment. In order to respond to the impacts and to overcome the challenges brought forth by the wave of changes throughout the world, an organization must be able to consistently reform and improve its internal procedures. Due to concerns regarding limited resources and time, most organizations choose to assemble project teams to accomplish ad-hoc yet nonrecurring tasks. This paper studied 256 samples to determine whether projected members'' professional competence and role expectations contribute to project success, and whether organizational commitment provides a moderating effect on professional competence to project success, and on role expectation to project success. The study indicated that: 1. Team members'' professional competence has partially significant influence over project success; the higher the professional competence and organizational commitment, the higher probability of project success. 2. Team members'' role expectations have significant influence over project success. 3. Organizational commitment provides no moderating effects on professional competence towards project success. 4. Organizational commitment can provide significant moderating effects on team members'' role expectations toward project success. 5. Certain demographic factors contribute significant differences toward team members'' professional competence, role expectation, organizational commitment, and project success. Based on the results of this study, it is recommended that internal project members consist primarily of managerial and administrative staff who are highly committed to the organization, married, aged 36~45, and possess Doctoral or Master’s degrees. If there is no perfect fit, suitable projected members may still be filtered according to analysis results.