A secondary survey was conducted to investigate the customers' opinions on fast foods at thirty noodle chain restaurants in Seoul from November 16 to 25, 1988. The results are summarized as follows: 584 customers were surveyed consisting 42% of male and 58% of female. Proportion of age groups was 32.9% of adolescents, 38.7% of young adults, and 28.4% of adults. Females and young adults visited more than once or twice a week. The majority of customers had a favorable opinions to 'convenience in diet' and 'use on busy', but unfavorable to 'consistant quality of meals is keeping', and 'consistency in service is keeping'. The priority of important factors in purchasing fast foods were the cleanliness, taste of meals, convenience, and the price. Customers were most satisfied with atmosphere, while least satisfied with the price.