Abstract: In order to promote scientific law-making, and reveal the factor influencing the action result of labour law, this paper employs the data from a survey conducted in Shanghai and other nine cities and uses the Logistic Regression Model to analyse it, from the perspective of exchange theory. The study finds that the resource dependence between employer and employee may affect the behaviour change of individual under law's intervention and then affect the action result of labour law. Social relations and their evolutionary rules under law's intervention are objective fact and the basis of law's intervention in social relations. More empirical research should be conducted to effectively implement the law's function in national governance.