Crew-cut micelles with polystyrene(PS) as shell and cross-linked poly(4-vinyl pyridine)-co-(divinyl benzene) [P(4VP-co-DVB)] as core have been successively prepared by reversible addition fragmentation transfer (RAFT)polymerization of 4VP and DVB with macro transfer agent,dithiobenzoate-terminated PS,PS-C(S) Ph in selective solvent．The linear macro RAFT agent PS-SC(S) Ph was prepared by RAFT polymerization of S using 2-(ethoxycarbonyl)-2-propyl dithiobenzoate (ECPDB) and AIBN as RAFT agent and initiatior．The advantages of this method are the block copolymerization,mieenization and cmsslinking reactions occur in one pot,and higher concentration of the mieelles up to 30％ can be obtained．The stable nano-sized micelles with functional cores were characterized by dynamic and static laser light scattering (DLLS,SLLS),transmission electron micmgraph (TEM), atomic force microscopy (AFM) and NMR etc．