The purpose of the study is to explore the relationship between abusive supervision, leader-member¡¦s exchange relationship, employee cynicism and workplace deviance behavior. The total valid sample consisted of 405 employees from Financial Services companies in Taiwan workplace. Moreover, the data from paired questionnaire reponsed by matched supervisors and subordinates (the 1¡G2 ratio) and was analyzed by factor analysis, reliability analysis with the SEM model to measure the relationship among the constructs. From the results, the Abusive supervision has a positive influence on Employee cynicism and Workplace deviance behavior. On the other hand, Abusive supervision has a negative influence on Leader-member¡¦s exchange relationship. In addition, Leader-member¡¦s exchange relationship also has negative influences on Workplace deviance behavior and Employee Cynicism. Furthermore, Leader-member¡¦s exchange relationship mediated the relationship between Abusive supervision and Workplace deviance behavior as well. Based on the results, the author suggests four proposals on the management practice. First of all, supervisors could take participative leadership. Secondly, supervisors can encourage or praise the subordinates, were considered out-group members, for their efforts. Thirdly, the enterprises could consider implementing the EAP (Employee Assistance Program) to console with those being abused employees. On the other hand, firms could launch the Assessment Center to select potential candidates who have possessed of participative leadership from the beginning.