[ Objective ] The study aimed to analyze the pharmaeodynamics process of gatifloxacin in rabbits. [ Method ] Following the oral ad- ministration of a single dose of 5,10 and 20 mg/kg gatifloxacin to rabbits, their vein blood was selected resp. at 0. 25 ,0. 50,1. 00,2.00,4.00, 8.00,12.00 and 24.00 h after administration, and the gatifloxacin concn, in the plasma were determined by coupling capillary Zone Electrophoresis with Diode Array Detection (CZE-DAD) , resp. and then the pharmacodynamies parameters were calculated. After the oral adminis...