MgB2 bulk samples doped with sucrose were fabricated with the formula MgB2-x Cx ( x= 0, 0.08, 0.12, 0.2, 0.3, 0.5). Appropriate amounts of sucrose corresponding to the desired carbon content were added. The doping effect of sucrose was observed. It was found that samples doped with x = 02 sucrose have optimized current density at high magnetic field. The optimized sintering temperature for high current density was found to be 850 C. H 2 and H irr were both found to be improved due to the sucrose doping.