This study takes the 32 old settlements in Taipei City as the research object, and analyzes the three decision-making results of continuous pipeline, demolition, and de-manipulation of 32 past patrols and monitoring, using seven prediction models including decision trees and analysis variable factors Choose 5, 8, 9 and other 3 methods to be included in the forecast analysis, compare the forecast with the actual decision, analyze the correct rate, select the best model to provide follow-up big data analysis, including older settlements and more detailed areas and management 139 sloping communities and all sloping communities are included in the analysis as a reference for subsequent slope disaster prevention decisions.