Polymer latexes for polymer cement were prepared by introducing small amount of functional monomers(acrylic acid and acrylic amide)during the semicontinuous emulsion polymerization of methylmetacrylate(MMA) and n-butyl acrylate(n-BA). The polymerization was investigated by following the variation of the amount and types of surfactants on particle size, polymer content at different times of the polymerization process. The results showed that both the particle size and polymer content can be controlled by the amount and types of surfactants. LE and NE types out of nonionic surfactants used were good surfactants due to the formation of stable polymer latex without coagulants. Especially, a hydrophilic chain length(n) of these nonionic surfactants had a significant effect on the final particle size and polymer content.