Gourmet embodies people's pursuit of a better life. Restaurants, as it provider, also play an important role in urban life and is an important space for communication. Under the influence of Covid-19 pandemic, restaurant operations are facing more challenges, and the death of restaurants has also reduced the popularity in cities. How to identify the gourmet vitality that brought about by the existence of dining spaces and effectively maintain the urban vitality of the city through urban plan and urban design, which are the challenge that need to be faced in the post-epidemic era. Gourmet vitality of restaurants forming gather in specific areas, which is not only affected by the restaurant's own factors, but also by the external environment. It used to be difficult to fully observe the vitality of food, so we try to perceive it in new ways. Taking Beijing as an example, our work aims to explore the relationship between the urban vitality, gourmet vitality and restaurant characteristics and multi-source big data are applied, such as mobile signal data, points of interest, and building volume. Firstly, many indicators are extracted to measure urban vitality, gourmet vitality and dinning space from the data. Then, the distribution and correlation of urban vitality and gourmet vitality are analysed. Finally, the relationship between food vitality, dining space and environmental elements is discovered through spatial regression calculations. The relationship between urban vitality and gourmet vitality is more complicated than our prediction, which gourmet vitality is jointly determined by the factor of dining spaces and environments, while environmental factors can also affect urban vitality in other ways
