For the fitness club industry, It has been a major problem that members' withdrawal rate is so high. Therefor, customer satisfaction research began to draw attention of researchers and practitioners. It is because customer satisfaction research is based on the consensus that the possibility that a satisfied customer starts re-purchase behavior is high. However, the relationship between customer satisfaction and re-purchase behavior has not been necessarily proved empirically. Most researchers only take up the connection between satisfaction and re-purchase "intention", not actual "behavior". The purposes of this study were (1) to examine whether member's satisfaction affect their memberships renewal/withdrawal behavior, by using longitudinal method, and (2) to find means to reduce the members' withdrawal rate by clarifying withdrawal reasons. Two times of investigations were carried out to the members of a fitness club in Nagoya. 635 samples were collected in the first investigation, and 138 samples were collected in the second investigation which carried out to members who had withdrawn one year later. The main results were as follows; 1) Satisfaction of the withdrawal was lower than that of the renewal. Satisfaction of the withdrawal felt down more just before withdrawing. Satisfaction of the withdrawal by problems of managerial condition was lower than that of the withdrawal by other problems. Therefore, it is proved that satisfaction has a great influence to the renewal/withdrawal behavior. 2) People who are young, people whose membership periods were short, and people whose use frequencies of the club were low were contained much in the withdrawal. The satisfaction factors about the effect on exercise and the human relations of the withdrawal were low. It seems that the various conditions which obstruct the club use are the major reasons of withdrawal. Some implications to raise satisfaction were discussed from the results above.
