Acceleration of a dust particle in the SOL (scrape-off layer)/divertor plasma of HL-2A with a single-null configuration is studied. A simplest model of the dust dynamics is applied,namely spherical shape of a dust, ion drag force due to Coulomb scattering as a dominant force,and spontaneous charging of a dust particle to the equilibrium charge. In the outer region nearthe plasma-facing wall the poloidal plasma flow pushes the dust particle to the divertor plates. Itis clarified that the dust particle with a radius of 1 μm from the top of the SOL/divertor regionis accelerated up to around 100 m/s at the divertor plates along the poloidal direction . Acceleration of a dust particle in the SOL (scrape-off layer) / divertor plasma of HL-2A with a single-null configuration is studied. A simplest model of the dust dynamics is applied, due to Coulomb scattering as a dominant force, and spontaneous charging of a dust particle to the equilibrium charge. In the outer region nearthe plasma-facing wall the poloidal plasma flow pushes the dust particle to the divertor plates. Itis clarified that the dust particle with a radius of 1 μm from the top of the SOL / divertor regionis accelerated up to around 100 m / s at the divertor plates along the poloidal direction.