High efficiency,short process and integrated forming of complex precision metallic parts are of great significance to the structural optimization and cost reduction of advanced aircrafts. In this work,the structural design optimization and processing adaptability of AlSi10Mg alloy thin-walled metallic components for new aircrafts were performed using selective laser melting（SLM）. The influence of laser power,hatch spacing,shielding gas and heat treatment on the manufacturing quality was discussed in details. The results show that under a set of optimized processing parameters,AlSi10Mg alloy formed by SLM shows a dense structure and fewer pores,and its deposited tensile properties at room temperature are superior to those of castings. The internal and surface qualities of the obtained parts are also good,and the geometry accuracy of the side walls after heat treatment is within 0.2 mm,which meets the assembly design requirements of complex new aircraft parts.