Polystyrene(PS) - poly(sulfonated N-2-hydroxyl ethyl aniline) (PSHEA) hybrid latexes were prepared by different emulsion polymerization of styrene process in the presence of sulfonated N-2-hydroxy ethyl aniline (S-HEA) using various initiators such as benzoyl peroxide(BPO), 2,2'-azobisisobutyronitrile (AIBN), and potassium persulfate (KPS). The S-HEA having sulfonic acid sodium salt could play a role in surfactant and the PSHEA was obtained by oxidant such as BPO, KPS and etc. The particle size and particle size distribution of the PS-PSHEA hybrid latexes were investigated with varying the process variables.