Abstract: Using butyl methacrylates, styrene as monomers, propylene glycol diacrylate as crosslinking agent, AIBN as initiator, the high oil-absorbing resin was synthesized by suspension polymerization. The influences of stirring rate, the amount of dispersant, polymerization temperature, the ratio of monomers, the amount of crosslinking agent on the particle size of the resin were investigated. The optimum conditions were as follows: the ratio of monomers 1.6∶1；the amount of dispersant 0.1%－0.2%; the amount of crosslinking agent 1%; stirring rate 200－300 r/min; polymerization temperature 70℃; reaction time 6h; the particle diameter of the resin was moderate. The oil-absorbing ability of the resin was more than 20(g/g).