Abstract: Ecological restoration in engineering-disturbed areas is meaningful for maintaining ecosystem functions and constructing regional ecological barriers. The selection, configuration, and maintenance of plants are key steps affecting the effectiveness of ecological restoration in disturbed areas. Identifying the driving factors for the spatial differentiation of plant communities can provide direct guidance for the selection, configuration, and maintenance of plants. Taking the project area of Shuangjiangkou Hydropower Station as the main study area, this research employed the Geodetector model to analyze the contribution rates of climatic, topographic, and soil factors to the plant distribution pattern. The results indicated that precipitation, temperature, and slope aspect are the primary factors influencing the spatial pattern of plant distribution, and thus should serve as the main basis for plant selection and configuration. In contrast, the impact of various soil factors on the plant distribution pattern is relatively minor, and these factors can be improved through maintenance measures. Therefore, soil factors can be used as auxiliary bases for plant selection and configuration; when it is impossible to balance the major environmental factors, soil factors should be optimized through maintenance. The research can provide references for the implementation of ecological restoration in engineering-disturbed areas of mountain-canyon region (such as the Shuangjiangkou Hydropower Station area), help improve the effectiveness of ecological restoration, consolidate regional ecological barriers, and hold great significance for protecting the green mountains and clear waters of China.