The domestic bank industry has been in a highly competitive situation due to the government's permission of setting up new banks. Therefore, banks now intend to enhance the earnings by developing wealth management business. The essence of how a fine motivation system to motivate financial consultants' job involvement and job performance is fairly crucial, and has become the important topic of human resources management in bank industry. The aim of this study is to investigate motivation system's effect on the consultants' job involvement and their job performance. This study adopted questionnaire survey method. This study assigned 128 questionnaires and 109 were used from collecting questionnaires, producing 85% effectively collecting rate. From the results of this study, we found the mediating effect of job involvement between importance of motivating system and job performance, and between satisfaction of motivating system and job performance. Based on the research findings, this study proposes certain management implications and further research suggestions.