The work aims to explore the important role of local culture in shaping the visual image design of ancient towns under the rural revitalization policy from the perspective of design, investigate the extraction method of ancient town culture, and study its application in the visual image design of ancient towns. Taking the visual image design practice of Nongan Town as the research object and starting from the Huanglongfu culture of the Liao Dynasty, the culture of Nongan Town in the Liao Dynasty is extracted and summarized and applied to the visual image design of Nongan Town through the extraction methods of graphics, color and text, trying to explore a feasible way of integration development between the cultural inheritance of the Liao Dynasty and the visual image innovation of Nongan Town. The culture of the Liao Dynasty provides unique visual elements for shaping the visual image of Nongan Town, which plays an important role in enhancing the image recognition of the town, showing the history, culture inner spirit and folk customs of the town and improving the visibility of the town. It is the vitality of sustainable development of ancient towns to build visual image relying on local culture, which has double significance for realizing the development of ancient towns and the inheritance and transmission of local culture.