Abstract: P-sets(packet sets) are a dynamic mathematical model(a dynamic information model,or a dynamic data mo-del), while P-reasoning is a dynamic reasoning generated by P-sets．The attribute conjunctive normal form expresses logi-cal implication between elements and attributes in P-sets．By using crossing and permeating among P-sets,P-reasoning and attributes,the concepts of attribute internal fusion,attribute outer fusion and attribute internal-outer fusion were proposed．Furthermore,the theorems about attribute internal-outer fusion,and the relations between attribute internal-outer fusion and attribute conjunctive normal form were obtained．The extension-shrinkage relation theorem and intelligence generation of attribute internal-outer fusion were given．On the end,attribute internal -outer fusion was applied to information intelligent digging-seperation．In the fact,attribute fusionin including attribute internal fusion,attribute outer fusion and attribute internal-outer fusion is an important characteristics hidded in P-sets.

Key words: P-sets,P-reasoning,Attribute conjunction,Attribute fusion,Intelligent generation of fusion,Information intelligent digging-seperation,Applications