The objective of this study was to examine the effect of embryos development following IVF of in vitro-matured porcine oocytes treated with epidermal growth factor (EGF). When cumulus-enclosed oocytes were incubated in TCM 199 medium supplemented with (1) control group, (2) 10 ng/ml EGF, (3) 10${mu}g$ml FSH and 10% FBS, or (4) 10 ng/ml EGF, 10 ${mu}g$/ml FSH, and 10% FBS for 42 hr, the late developmental rates on NCSU (0.4% BSA) medium after fertilization were higher in (3) and (4) groups (13.4, 18.3%) than in (2) group (5.2%, p < 0.005), but (2) group is significantly higher than the development to blastocyst of oocytes of (1) group (1.2%). Also, when the cell number of total, ICM, and TE of those blastocysts at 6 day produced in vitro was investigated by double staining (PI and bisbenzimide), total cell number of (4) group (58.80${pm}$ 11.90) was higher than that of (2) and (3) groups (42.17${pm}$9.97, 49.07${pm}$9.77, P < 0.05). ICM cell number of blastocysts of (4) group (11.69${pm}$5.56) was higher than that of (2) and (3) groups (5.00${pm}$4.24, 6.77${pm}$4. 92, P < 0.05). Furthermore, the proportion of ICM in (4) group (19.0${pm}$1.6) was higher than that in (2) and (3) groups (11.1${pm}$3.0, 12. 7${pm}$2.1). These results suggested that in vitromatured porcine oocytes treated with EGF alone can be developed to blastocyst, but high proportion on the development to blastocyst and number of total cell and ICM in blastocyst can be obtained when supplemented with additional FSH and FBS.