This article we want to enquire into is to target the flexibilities of the personnel system, especially focusing on Taipei City Hospital to distinguish: First, to discuss the related theories of the concepts, functions of the contractual manpower system. Second, to get the ideas about the background and the development when Taipei City Hospital adopts the contractual manpower system. Third, to search for Taipei City Hospital's contractual manpower system with empirical researches, and to get to know how the system works in practise. Forth, to analyse the problems, merit and demerits of the contractual manpower system held in Taipei City Hospital, and to find out resolve and suggestions of possibilities by studying all the evidences empirically. In addition, the research methods used by this text are Documentary Analysis and Depth Interviews, with the adoption, development, maintenance and exertion of human resource management as its 4 functions for the keynotes, in order to debate the system and the actual situation of the contractual manpower of the individual organizations. Each of functions includes its sub-categories: First, the adoption-A. Human resource programs. B. Recruitments and auditions. Second, the development-A. Training and development. B. Career development management. Third, the maintenance-A. Salary. B. Benefits. Forth, the exertion-A. Encouragement. B. Performance appraisal and management. In the end, according to the investigation of empirical evidences, there are 6 suggestions put forward to solidify the contractual manpower system expectantly, and promote the feasibilities of policies.