In this paper, based on the perspective of landscape genes, the inherent and disappearing genetic information of Tanghe cultural genes are identified, the landscape characteristics are collected and studied, and the landscape characteristics are further deconstructed, and the identification results are obtained and visually expressed in the form of charts. The three major articles of "protection, publicity and utilization" of regional cultural genes are done well, so that Tanghe, which has gradually retired to building streets, can "flow" again and Tanghe culture has been "passed down".