The subjects of the study are the fast food restaurants in Daegu Metropolitan City. I t is because the investigation of the customer satisfaction in the present fast food restaurants is insufficient. The sampling has been conducted with the domestic customers in Daegu using the fast food restaurants as samples. The findings based on the methods of study and analyses of the materials are as follows: First, it is shown that the service quality has a significant influence on the customer satisfaction. Second, it is shown that the customer satisfaction has a significant influence on the customer loyalty. Third, it is shown that the using styles and the average expenditures in terms of the using characteristics have a significant influence on the customer satisfaction. Fourth, it is shown that the using styles and the average expenditures in terms of the using characteristics have a significant influence on the customer loyalty. Accordingly, it is necessary for the managers of the fast food restaurants and their employees to make efforts for the customers to perceive much the matters of the service quality. Finally, it is necessary to develop continuously concrete and scientific measuring instruments which can examine the relations between the service quality, the customer satisfaction and the customer loyalty, and it is also necessary for the study of the future to establish the models of study suitable for the Korean situations without depending on the foreign precedent studies and to develop measuring items.