Voice behavior refers to that employee to express their views, opinions and information related to their work. Many researches show that voice behavior has significant importance on the prevention of decision-making mistakes and the improvement of organizational effectiveness. Based on the survey of 216 employees, the paper explores the influence and mechanisms of LMX and two forms of voice behavior. The results show that LMX has significant positive impacts on both promotive and prohibitive voice behavior. And psychological empowerment partially mediates the relation between LMX and two forms of voice behaviors.