This dissertation investigates employee's organizational citizenship behavior,organizational commitment,and leadership behavior of 200 employees in several enterprises through questionnaires.Organizational citizenship behavior is measured with activeness dimension,organizational faithfulness,and helping dimension;Organizational commitment is measured with affective commitment,continuance commitment and normal commitment.Supporting type leadership behavior represents leadership behavior.The result shows that there is correlation relationship between employee's individual diversity and organizational citizenship behavior.Supporting type leadership behavior is positive with organizational citizenship behavior(activeness,organizational faithfulness and helping behavior).The different dimensions of organizational commitment are related with those of organizational citizenship behavior.And the relationships among them are different.