The importance of human resource management (HRM) increases with each passing day. In the past, organizations only focused on the coordination and the integration between HRM and other management functions. Nowadays, with a more broad and holistic angle, we usually elevate HRM in enterprise from the strategic point of view. The role it plays in the organization becomes more active rather than passive and it puts more emphasis on the intensive cooperation between HRM and business strategies. The studies of HRM strategy in Taiwan only focus on the high-tech industry. Therefore, this study will aim at Cable TV (CATV) system industry and investigate the influence of HRM strategy by organizational life cycle and business strategy. The purpose of this study is to know how the CATV systems obtain the employees they need by recruiting and education training in digital convergence. And then we can further understand the HRM strategy in organization and its relationships with organizational life cycle and business strategy. This research adopted case study and targeted three domestic CATV firms. This study also described and explained the status of HRM in CATV system industry by case comparison and then induced the conclusions and research propositions. The results were as follow: 1. The organizations will adopt different business strategic types when they are in different stage of organizational life cycle. 2. CATV will increase the varieties of their product line in order to earn more revenues as the stage of life cycle goes. 3. The stage of the development in organizational life cycle will be affected by parent company. 4. The organizations will adopt different HRM strategy types when they are in different stage of organizational life cycle. 5. No matter at what stage of life cycle, CATV will take internal training seriously. 6. Employee turnover rate of CATV is very low, and the source of recruitment is seldom from external. 7. The HRM strategy tends to be accumulation type. However, it will shift to facilitation type when they develop new services. 8. There is a ¡§Fit¡¨ relationship between business strategy and HRM strategy; however, it changes because of parent company¡¦s effect.