The laser cladding layer on the 304 stainless steel surface is modified by a high-frequency microforging process. The microstructure and phase constitution of the laser cladding layer before and after the high-frequency microforging treatment are characterized by using optical microscopy and X-ray diffraction. The microhardness distribution and corrosion property of the counterparts are examined by Vickers microhardness tester and the electrochemical work station, respectively. The results show that laser cladding layer is of a broken dendritic microstructure and refined grain size after microforging, while there is no obvious change in the phase constitution. The microhardness of the microforged area is greatly enhanced with an affected depth of 0.65 mm. The average microhardness of the surface is improved by about 30% and the microhardness increment decreases gradually with the increasing distance from the top of the cladding layer. The corrosion resistance of the laser cladding layer is improved by nearly two folds after microforging.