As the growth of health and environmental awareness, people begin to concern the food origins. As a result, vegan diets become popular in recent years. There is a lot of literature on the health effects of vegetarian and vegan diets, the analysis of vegetarian consumer behavior, the factors affecting vegetarian consumer satisfaction and so on. However, there are very few studies on the managers of vegetarian restaurants. Therefore, this study takes the managers as interviewees to explore the current status of vegetarian restaurant management. In this paper, the semi-structured in-depth interview method is used. Through one-on-one conversation, a deep understanding of respondents' experiences and ideas can be gained. The interview outline covers the following topics: reasons to start a vegetarian restaurant, food origins, create of new recipes, problems that restaurants face, customer base, restaurant marketing, the best vegetarian restaurants and other related issues. The research found that, for examples, most of the vegetarian restaurant consumers are not vegetarians, the meat recipes are usually used to create new vegetarian ones, and the common restaurant problem is the personnel issue. The research results and recommendations can be provided as reference for the managers of vegetarian restaurants.