How to promote the competitive potential of business is the most important target presently. Being the new competitive era has come; the traditional human resource management model can¡¦t meet the new challenge in 21 century. The human resource management system in business has faced the new evolution for this new age. Under such a complex competitive environment, the competitive power of business depends on the proper utility of the human resource management type. ¡§Keeping the core specialty, leaving behind the others¡¨ was regarded as the strategy of business to keep profit base. Outsourcing system is regarded as the way to meet the strategic target, cost reduction, customer satisfied improvement, and other performance improvement. Being more flexible for company running, and the managers can concentrate themselves on the core specialty ability. However it can¡¦t be denied that outsourcing system exhibit some risks and some problems. It takes so much attention not only to create the largest profit for customer as well as to guarantee the abidance of contract regulation but also to promote the performance quality. The problem from the mechanism of outsourcing management will be induced when there are communication difficulty between company and outsourcer. The subject of this study is the Chunghwa Telecom Co., Ltd. The outsourcing was regarded as the strategic tool to promote the competitive potential. The key issue that outsourcer performed the management mechanism. Such as the management of contract type, the management of monitoring all the procedure, the management of evaluation to the efficiency, was also studied. In order to run this outsourcing system well, the human resource management in outsourcer was also researched. The analysis of the data revealed the following main conclusions: 1. Most interviewees agreed that the major reason for outsourcing system is the strategic target. The secondary reason was reducing and controlling the cost. The most important factor which are considered is promoting the competitive potential for this company. The outsourcing will not last for a long time by only considering this one factor of cost. 2.Some problems could be induced by the vicious competition between other outsourcing companies and could make the bad influence to the company, such as jerry-build in the pipe construction. The deficiency of professional knowledge of monitoring human resource was the most important factors for the success of outsourcing system in this company. The human resource with engineering management knowledge should be trained and educated for last term to get enough professional ability to execute the engineering efficiently. 3.More than 50% interviewees in this company agreed that the general task should be kept to ensure the working right for personnel in this company. The most personnel had the opposite attitude for ¡§the importance of outsourcing system for the personal service is increasing day by day¡¨. However, facing the privatization era, the manager should realize how to improve proper human resource utility and arrangement in organ structure. And how to promote the producing power of internal personnel instead of the outsourcing system and push the internal personnel to retire. 4. The quality of the telecommunication is the most important factor that affected the customer right. As known by internal personnel and the customers¡¦ view of piping problem is owing to that pipe always damaged by the digging engineering. It came from that working units are too negligent to check scene and to confirm the location in map. 5. As with the human resource management of outsourcing system, we focus on not only the requirements of engineering quality but also the health and safety of labors and the control management of environments, especially the noise and air pollution. By the result of this study, some suggestions are proposed. To construct more effective outsourcing management mechanism under the abidance of the ¡§regulation of government purchase.¡¨ The contract activation mechanism should be performed to maintain the cooperative relationship with outsourcers in long term.