Along with changes in Economy, Tourism and the influence of foreign waves, the market of Food Service in Vietnam has also changed to meet the needs of customers. At many restaurants in Vietnam, customer satisfaction can greatly affect restaurant revenue. Therefore, it is essential to determine which perceived quality factors affect customer satisfaction. The survey was conducted through questionnaires collected from 329 respondents, who experienced in restaurant services in Vietnam. In this paper, four factors are found that have influence on customer satisfaction in restaurants: Service quality, Product quality, Environment and Price. In addition, the research also gives some contributions based on the research results, helping businesses understand customers and meet customer satisfaction requirements in the restaurant.