Abstract: Regional integration of three industries an important measure to promote rural revitalization,and leading agricultural enterprises are an important driving force to promote the integration of three industries.Therefore,on the basis of constructing the evaluation system index of integration degree between leading agricultural enterprises and related industries,taking Beilin District of Suihua City,Heilongjiang Province as an example,entropy weight method was used to measure the integration level of regional three industries driven by leading agricultural enterprises.The research showed that agricultural leading enterprises had an important impact on the integration of regional three industries,but the integration degree of agricultural leading enterprises and other industries were different.Therefore,it was suggested to further accelerate the establishment of a multi-subject interest mechanism,accelerate the coordinated development of the industrial chain,increase industrial policy support,strengthen the training of industrial professionals,and strengthen infrastructure construction and sharing strategies.Give full play to the leading role of leading agricultural enterprises in driving the deep integration of regional tertiary production,realize the increase of farmers’ income,accelerate the modernization process of agricultural industry,and help the construction of an agricultural power.