In order to investigate microstructure and mechanical property of 304 stainless steel by laser cladding with preset powder feeder,304 stainless steel multilayer laser cladding experiment with preset powder feeder was carried out on 27SiMn steel.According to the sequence of laser scanning,the coating materials are divided into four zones.Microstructures,mechanical properties and fracture morphology of the four zones are compared and analyzed.Results show that the microstructure of the laser cladding 304 stainless steel shows the characteristic of directional solidification,and the grain is mostly columnar grain.The grain sizes of the late cladding area are relatively larger than that of the early cladding area.The tensile test results show that the tensile property of the late cladding area is relatively poorer than that of the early cladding area.The tensile fracture morphology of laser cladding 304 stainless steel is mainly ductile fracture,and the local area is brittle cleavage fracture.There are some impurities in the fracture,and the impurities mainly appear in the late cladding area.The impurities are mainly metal oxide according to energy spectrum analysis.