In November 2013, General Secretary Xi Jinping first proposed the important idea of “precise poverty alleviation” when he visited West Hunan. In order to achieve the “precision” requirements, it is necessary to accurately identify poor households. For the convenience of the government to the precise poverty alleviation work effectively, this study analyzes the collected family information data and comprehensively considers that the information data based on multidimensional poverty contains discrete and continuous numerical values. And the characteristic data of the series has hierarchical characteristics. A model based on the new feature selection algorithm of REAHCOR and GBDT classification algorithm is constructed. The model is applied to the poverty rating evaluation system and has achieved sound results.