AbstrcatAcrylate polymer (ACR) latex was coagulated using coagulation agent under different conditions. The coagulation efficiency of ACR latex was characterized by the variation of particle size during the coagulation process. The coagulation mechanism was also discussed. The influences of coagulation agent, temperature, agitation speed, agitation time and solid content of latex on coagulation process were investigated. Coagulated particles with narrow particle size distribution and regular morphology were obtained under optimized coagulation conditions.