Abstract: In order to analyze the influence of underground civil air defense channel on the surrounding buildings,according to the geological conditions of site engineering,we followed the comprehensive analysis method to determine the settlement influence scope of civil air defense channel using the Peck,Plaxis,ABAQUS.The results show that the numerical calculation is consistent with the on-site investigation.The study has a certain reference significance for the analysis of the influence of underground construction on the surrounding buildings under the similar conditions.