Abstract: The developments of the theory on core-shell emulsion polymerization during the past ten years have been summarized,which includes that polymerization mechanism—polymers aggradations and polymerization in the surface of particles;preparation methods for core-shell particles—batch, equilibrium
swelling, semi-continuous and continuous; several morphologies and structures of common emulsoid particles and influencing fac-tors of thermodynamics and dynamics; and characteristic meth-ods of core-shell structure including the ability of films forma-tion. Finally applications in coating are introduced.

Key words: polymer, morphology, ability of films forma-tion, coating