The simulated annealing method was applied to study the self-assembling morphologies of amphiphilic

semi—flexible diblock copolymem in solution with a series of interactions between the core-forming blocks and the solvents．The simulation results illustrated that the core—corona aggregates were formed in all cases．The spherical micelles with thorns on the surface ale formed when the interaction parameter is small．And the spherical micelles increase in size with the increase of the interactions．Rod-like mieelles with thorns on the surface are formed when the interaction parameter increases．And the thorns on the surface gradually tailed off with the further increase of the interactions．The bigger spherical micelles without thorns on the surface are formed when the interaction parameter increases further.