Suspension polymerization was performed using Tricalcium Phosphate (TCP) as a stabilizer. The zeta potential of TCP in the continuous water phase varied with surfactants adsorbed on TCP, and by changing surfactants, the effect on the polymer particle size was investigated. At about 0 mV zeta potential of TCP, it coagulated, but the adhesion amount of TCP on the droplet surface increased. Consequently, polymer beads with smaller size and higher uniformity were prepared.