With the trend of group company’s diversification, subsidiaries’ competitive advantages gradually stand out, which makes scholars pay more attention to the research on the internal differentiated control in group company. This study delves into the impact of subsidiary roles on mode of management control in group company by multi-case study method, through analyzing the unit of four different-role’s of wholly-owned subsidiary attached to the same group company from the perspective of power allocation. The conclusion shows that subsidiary roles would be represented by strategic importance and internal normalization, and as results, subsidiary roles can be divided into four types including main subsidiary, emerging subsidiary, contributing subsidiary and exploiting subsidiary, which adapt to different modes of management control. Furthermore, the conclusion shows that strategic importance and internal normalization have different impacts on the mode of management control in group company, and strategic importance drives group company to take centralized management and control on subsidiary.