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We have applied a continuum self‐consistent field(SCF)theory to the reversible adsorption of neutral triblock copolymer confined between two parallel flat plate,The conditions of interaction are divided into two different kinds,the symmetrical and asymmetrical triblock copolymer confined between two similar or different surfaces,The effects of the separation of the surfaces,L,numbers of segments in a chain Na1,Nb,Nb2,and the energetics of the interaction between the chain and surfaces,u1,u2,are investigated.Segment‐profile and conformation distribution of loop,bridge,tail are determined.Then it is found that the bridging fraction in the two condition can be connected by a scaling relationship and the vary of interaction can be explained by the change of confomation