With the increasingly fierce competition in service industry, enterprises are more willing to provide ser?vice with a smile in order to achieve customer satisfaction. In the academic circle, the research results about the relationship between service with a smile and customer satisfaction are contradictory. Therefore,this study classifies perceived service quality that is an important intermediary variable between them, and collects data from 204 em?ployee-customer encounters,and makes a further study on the mechanism of impact of service with a smile on cus?tomer satisfaction. The results sho...