Firms are classified as three control type firms: manager control firm, owner control firm and corporation control firm. We give the standard of different control type firms, and select 141 Japanese large corporations from electric machine industry. We analyze the dates of these corporations during 1990 1997, give the research results as follows. (1) Profit rate is not correlative with different control type firms; (2) Behaviors of different control type firms are unlike. Manager control firm pursues the maximum of firm scale. Corporate control firm pursues them aximum of capital turnover.Owner control firm pursues the maximum of sale profit rate. A ccording to the theory of the firm that the firm is viewed as the contract of both labor factor owned by manager and capital factor owned by shareholder and creditor, we explain our empirical results. Profit rate of firm can be unrelated with the type of corporate control when there is an effective competition in the market of each factor of firm. We think that Baumol’s firm model is suitable to corporation control firm , and Marris’s firm model is suitable to m anager type firm.