The invention belongs to the technical field of artificial snow, and in particular, relates to a snow producing and coating method suitable for an electric test and a snow coating sample. The snow producing and coating method comprises the following steps: freezing of ice blocks: the ice blocks are frozen outdoor in winter or in a refrigerator; selection of a snow producing tool: an angle grinder serves as rotating power; and a steel wire wheel serves as a friction head, is mounted on the angle grinder, and is contacted with the ice blocks; and snow production and coating: the snow coating sample is positioned near the ice blocks; the angle grinder is started; the steel wire wheel rotates; the contact positions of the steel wire wheel and the ice blocks are adjusted; and snow is coated on the snow coating sample by a parabola drop type or horizontal direct injection type snow coating method. The snow coating sample has the snow coating density of 0.08-0.15 g/cm3 and the snow coating thickness of 3-8 cm. The snow producing and coating method produces and coats the snow under the condition of environmental temperature of not higher than 10 DEG C, and is fast in snow coating speed and short in snow coating time; and the snow coating sample satisfies the requirements of the electric test.