The use of native plants to improve rumen function is of interest to researchers and nutritionists because the use of additional chemicals in the diet can lead to residues in meat or milk. Plants with high mineral content have the potential to regulate rumen pH stability. Thus, this experiment aimed to compare the effects of banana flower powder (BFP) and sodium bicarbonate (NaHCO3) supplementation on intakes, weight gain, ruminal function and blood electrolytes in Boer crossbred male goats. The experiment was conducted using a completely randomized design with three treatments including a control group (Control), supplementation with 4.5% banana flower powder (BF4.5), and supplementation with 4.5% NaHCO3 (Na4.5), each replicated five times. The results show that dry matter intake, water intake and weight gain from Na4.5 were higher than those from BF4.5 and control groups (P3 supplementation on body weight and levels of plasma electrolytes (P>0.05). The results from this study indicated that BFP can repalce NaHCO3 as rumen buffering agent in the diets of growing goats.