Abstract: The public security risk assessment of home-stay industry is to judge the security factors affecting the management of home-stay industry, to construct a public security risk assessment system with 5 dimensions and 19 indicators, and to comprehensively evaluate the stability of public security order by using analytic hierarchy process and fuzzy synthetic evaluation method. This evaluation method is applied to the investigation and enforcement of potential dangers of residential public security in a scenic spot in Y County, H City, to analyze the threshold range of the evaluation data, to guide early warning and to put forward corresponding risk countermeasures. It has good applicability for monitoring, early warning and source analysis of residential public security risk.