Abstract: The effect of pulsed laser radiation on the preparation of silver was experimentally studied, of which the ultrafine Ag particles in AgNO3 solution were displaced by Zn powder, with the preparation mechanism analyzed. The laser beam energy was proved to be able to break up the clad particles which the larger Zn particles were wrapped up by Ag, thus expediting the displacement reaction. At the same time, the pulsed laser energy as a heat source will spur AgNO3 to decompose photothermically to precipitate ultrafine Ag particles. In this way the rate of precipitation of Ag rises. The Ag particles precipitated with and without pulsed laser radiation were compared with each other and analyzed by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The results revealed that both the morphology and size of the two ultrafine Ag particles are different, and those with laser radiation are better than those without laser radiation in either grain size or purity.