Previous studies on Chinese trade unions emphasize on its dependence of government and capital. Recent studies have started to notice the important affection of worker’s collective action on pushing enterprises trade unions to change its role，but insist that the reconstruction and main practice of enterprises trade union like collective bargaining，are still under the control of government and capital. Based on the analysis of a Japanese car factory enterprise union’s long term practicing process，this study suggests that workers’ solidarity action，consciousness development，experience growth，will together make a continuing interaction and tension with the top-down control. During the transition period，changes in workers’ life experiences provides their solidarity formation and consciousness enhance with resources，while trade union’s practice gradually extends the institutional space. Worker’s solidarity and practice should not be ignored in enterprise trade union study. Finally this paper evaluates the overall prospects of OEM factory’s trade unions.