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The traditional digital protection system lacks the extraction and display of the landscape based on spatial information technology, resulting in an incomplete digital archive of the conventional landscape constructed. To optimize the traditional cultural landscape protection strategy, this paper constructs a specific technical route using digital technology. Inclined photogrammetry and 3D laser scanning technology are used to carry out 3D modeling of regional traditional cultural landscapes, and the combination of the results of the two can be used to visualize the spatial layout of the landscape in the protection of traditional cultural landscapes. Based on the 3D model, the landscape space was analyzed using spatial syntax. According to the spatial syntax, the integration degree, clustering coefficient, control degree, and average depth of the sight line of the landscape in City D were analyzed. The comprehensibility value of the landscape space in City D was 0.26, and the landscape identifiability was not high. The development of overall space and local space is inconsistent, and the ratio of global integration degree to local integration degree, R², is 0.45, with a low value and average correlation. By analyzing the specific situation of the landscape and constructing the resistance surface, we examine the various resistance factors faced by the protection of traditional cultural landscapes. The analysis results indicate that rural roads and settlements are more suitable for the construction of cultural landscapes.