The invention discloses a laser forming device for directionally conveying single-particle nanometer metal particles. The laser forming device comprises a mixed sample feeding system, an aerodynamic lens, a confocal laser set and a workbench. The mixed sample feeding system is connected with the aerodynamic lens, and the aerodynamic lens is located above the workbench. The confocal laser set is located between the aerodynamic lens and the workbench. The mixed sample feeding system can fully and evenly mix nanometer particles and gas to generate nanometer aerosol of certain concentration and a certain flow speed. The aerodynamic lens can effectively focus nanometer particles with a certain particle size range. The confocal laser set melts the nanometer particles sprayed out by the aerodynamic lens and makes the nanometer particles cover a sintering base body surface of the precise workbench in a molten mode. By means of the device, forming accuracy is greatly improved, one-way conveying of the particles can be achieved, the molten drop fusion covering position is controllable, the technical means is easy and convenient to implement, and the laser forming device can be designed and produced in a modular mode and has positive technical effects and good market application prospects.