A study was conducted at the Experimental farm in Long Hoa commune, Binh Thuy district, Can Tho city to evaluate the effects replacing increasing levels Para grass (Brachiaria mutica) with cabbage waste (Brassica oleracea) in the diets on feed intake, nutrient digestibility and rumen characteristics in growing Bach Thao goat. The experimental design was a Latin square with 4 treatments x 4 periods using 4 male Bach Thao goats (24.3 ±0.92 kg). The treatments were replacing Para grass with 4 levels of cabbage waste (DM basis); 0, 25, 50 and 75% (CW0, CW25, CW50 and CW75). Concentrate and urea were supplied to balance level of protein in all treatments at 6.0 gCP/kg live weight. The experimental period was 14 days consisting of 7 days adaption and 7 days of sampling period. The results showed that DM intake was not different among the treatments which ranged from 705 to 760 g/day (p>0.05). Similarly CP intake tended to increase (149 -159 g/day) with increasing content of cabbage waste but not significantly different. As expected because of the lower NDF and ADF content in the cabbage waste, the NDF and ADF intakes reduced with increasing cabbage waste in the diets. Rumen pH, N-NH3 and VFA concentrations were not significantly different (p>0.05) among the treatments It cab be concluded that replacing para grass with cabbage waste up to 75% of the diet did not result in any adverse effects on feed digestibility and rumen parameters. However, Bach Thao goats fed with 50% replacement (CW50 treatment) resulted in better in growth gain.