Abstract: Vague set is used to represent the fuzzy measurement information of object characteristic.A new method of multi-sensor object recognition is proposed based on vague set.The method defines the similarity degree between two Vague values，and constructs the database model of object recognition based on vague set.The weights of characteristics are objectively determined by the matrix of similarity degree.The algorithm of object recognition is given according to the overall similarity degree.The example analysis shows that the method is effective.