Taking Xi’an metro station as an example, we analyze the artistic methods of metro public space to explain and spread the ancient rhyme culture, modern industrial civilization, modern revolutionary culture and other regional cultures, and put forward the concept of further innovative design in terms of increasing the occupancy, enlarging the pattern, highlighting the cultural characteristics of the ancient capital, and strengthening the comprehensive utilization of the metro public space in multilevel and multi-carrier. The study first establishes a multi-objective metro public space configuration model based on genetic algorithm to realize the reasonable layout of metro public space. Then it proposes a style migration method of regional cultural elements based on the improved circular consistency generating adversarial network, and realizes the color migration under multiple reference objects to realize the interface and color design of the entrances and exits of the metro public space, the station hall level and the platform level. The results of user experience show that the overall public space of Xi’an Metro Line 4 has an intermediate centrality of 8.8216 and an intermediate centrality potential of 0.5859, and its overall suitability is relatively balanced.