The Objectives of this research are as follows: 1) To study the causal factors affecting the competitive advantage
of restaurants in Thailand 2) To study the influence of competitive on restaurant business performance in Thailand. 3) To
model the causal factors that affect competitive advantage and restaurant business performance in Thailand. The review
literature by documentary research from 250 articles can be used for 120 articles, with the source of the articles from
numerous databases. The research methodology is the mixed method through conducting of quantitative and qualitative
research for data collection. The quantitative research is an analysis of the structural equation modeling (SEM) and the in depth interview as part of the qualitative research.