The purpose of this study was to investigate the effect of flavone (20 mg/kg) on the pharmacokinetic parameters and the bioavailability of paclitaxel (40 mg/kg) orally coadministered in rats. The plasma concentration of paclitaxel in combination with flavone was increased significantly (coadministration p＜0.05, pretreatment p＜0.0l) compared to that of control. Area under the plasma concentration-time curve (AVC) of paclitaxel with flavone was significantly (coadministration p＜0.05, pretreatment p＜0.0l) higher than that of control. Peak concentration (Cmax) of paclitaxel with flavone were significantly increased (coadministration p＜0.05, pretreatment p＜0.01) compared to that of control. Time to peak concentration (Tmax) of paclitaxel with flavone decreased significantly (p＜0.05) than that of control. The total body clearance (CLt) and elimination rate constant ($eta$) of paclitaxel with flavone were significantly reduced (p＜0.05) compared to those of control. Half-life (t$_{1}$2/) of paclitaxel with flavone was significantly prolonged (p＜0.05) compared to that of control. Based on these results, it might be concluded that flavone may enhance bioavailability of paclitaxel through the inhibition of cytochrome P450 and P-glycoprotein, which are engaged in paclitaxel absorption and metabolism in liver and gastrogintestinal mucosa, respectively.