Preparation method of irregular silver powder

The invention discloses a preparation method of irregular silver powder, which comprises the following steps: respectively preparing a dispersing agent solution, a silver source solution and a reducing agent solution according to concentration requirements, keeping the solutions at a certain temperature, and simultaneously dropwise adding the silver source solution and the reducing agent solution into the dispersing agent solution according to different speeds under a stirring condition to carry out reduction reaction, the dripping speed of the reducing agent solution is 1.5 times of that of the silver source solution, adding 2-5 mL of a flocculating agent after dripping of the reducing agent solution is finished, increasing the stirring rotating speed until dripping of the silver source solution is finished, adding the flocculating agent again after dripping of the silver source solution is finished to flocculate and precipitate the silver powder, filtering and washing for several times, and drying in a dryi