Objective:To assess the effects of HEMA on the proliferation and migration of human dental pulp cells(hDPCs).Meth-ods:hDPCs were obtained using tissue explant culture technique in vitro,and then cells of the 3rd -5th passages were treated by differ-ent concentrations of HEMA for 24,48 and 72 h respectively.Cell proliferation was examined by MTT assay.Cell migration was ob-served by Transwell method.Results:The proliferation ability of hDPCs decreased when exposed to HEMA in both time and concentra-tion dependent manner(vs control,P <0.05).Cell proliferation at 24 h expossure was statistically higher than that at 48 h and 72 h(P<0.05).The migration of hDPCs was significantly reduced in HEMA groups at different concentrations(vs control,P <0.05).Con-clusion:HEMA inhibits the proliferation and migration of human dental pulp cells in vitro.