Preparation method of silver powder

The invention discloses a preparation method of silver powder, and belongs to the technical field of preparation of precious metal powder materials. The preparation method comprises the following steps of S1, simultaneously dropwise adding a silver nitrate solution and an active inducer solution into a dispersing agent solution under a stirring condition to obtain a first mixed solution, specifically, an active inducer in the active inducer solution is one or a mixture of more of sodium carbonate, sodium bicarbonate, potassium carbonate or potassium bicarbonate; S2, dropwise adding a reducing agent solution into the first mixed solution obtained in the step S1, and reacting to obtain a second mixed solution; and S3, adding a flocculating agent into the second mixed solution to obtain powder, washing the powder with water and dried, and carrying out airflow crushing on the powder to obtain the silver powder. Raw materials used in the method are non-toxic, pollution-free and environment-friendly; and the proces