In order to find polymerization conditions for polycetyl methacrylate with homo-geneous molecular weight in higher conversion，we have studied the solution polymeriza-tion of cetyl methacrylate in carbon tetrachloride，chloroform，benzene，and sym-tetra-chloroethane．From the experimental data，the following conclusions can be drawn：(1)the chain transfer constants of the solvents selected above are lower than those jn the polymeriza-tion of methyl methacrylate under similar conditions；(2)the solution polymerization rates of cetyl methacrylate in the four given solvents are nearly the same；(3)in higher con-versions，the molecular weights of polycetylmethacrylate depend mainly on the chain transfer constants of the solvents，but under certain conditions the viscosity effect induced by polymeric molecular shape in the solvents might have some influence on the molecular weights of the polymer obtained；(4) homogeneity of the molecular weight of the poly-met is related probably to the polymeric molecular shape in the solvents，but not to the apparent viscosity of the solution．