This study was conducted to investigate the effect of renovation of white clover dominated pasture. It was arranged in a randomized block design with two mixture types: 5-species mixtures(5-SM); orchardgrass 40% + tall fescue 20% + perennial ryegrass 10% + Kentucky bluegrass 10% + red clover 20% and 8-species mixtures(8-SM); orchardgrass 40% + tall fescue 20% + perennial ryegrass 10% + Kentucky bluegrass 5% + redtop 5% + red fescue 5% + alfalfa 5% + red clover 10%. This study was carried out from 1997 to 1999 at Chungnam National University. In the white clover dominated pasture, the DM yield was higher obtained in the 8-SM than that of in 5-SM, but there was no significant difference between 8-SM and 5-SM in both chemical composition and DM digestibility except content of CP. The yields of CPDM and DDM were higher in 8-SM than those in 5-SM as well(P<O.O5). In botanical composition, the renovation by 8-SM and 5-SM, comparing with that of before renovation, were effective for controlling of weeds and white clover, and maintained good botanical composition of herbage stands. however, 8-SM was more effective for control of weeds than 5-SM. The results from this study proved that 8-SM treatment, which was effective for the control of weeds and white clover, produced a higher DM, CPDM and DDM yields of herbages, and maintained good botanical composition in white clover dominated pasture. (Key words : Pasture renovation, Reseeding, Mixtures, White clover)