Camphor oil/latex dispersions were prepared by miniemulsion polymerization with a reactive emulsifier for the purpose of controlling camphor oil release. The prepared dispersions were characterized by dynamic light scattering method, transmission electron microscope and thermogravimetric analyses. The result indicates that camphor oil/latex dispersions had high stability and excellent ability for the control release of camphor oil. The volatility of camphor oil was averted after entrapping into the latexes. The particle size of the camphor oil/latex dispersion was approximately 89.4 nm and uniformly distributed when the dispersion was prepared at the conditions of that mass content of monomer (molar ratio of MMA to BA 2:3) to the dispersion 7.5 %, mass ratio of camphor oil to monomer 6 %, mass ratio of DNS-86 to monomer 20 %, molar ratio of AIBN to monomer 1.5 %, and mass ratio of HD to monomer was 2.5 %.