Local magnetization reversal of exchange-biased NiFe/FeMn bilayer was performed by using the DPSS laser under external magnetic field. When the laser illuminated the patterned film with the power of above 300 mW during 15 min, a magnetoresistance (MR) curve with symmetric peaks at the opposite field was obtained due to the local reversal of exchange biasing. A similar result was observed in NiFe/FeMn/NiFe trilayer. As the exposed area expanded, the intensity of opposite MR peak increased. This proved that the local reversal of exchange biasing could be realized by laser annealing.