Disclosed are a scrub sponge and a preparation method therefor. The method for preparing the scrub sponge includes the operations of: obtaining a first mixture by stirring alkalizer, porogen, konjac powder, scrub granule and water, and filling the first mixture into a mold to form a preform, where the preform includes a first sponge layer； forming a parison by sequentially cooking and freezing the preform； and sequentially unfreezing, dehydrating and drying the parison to obtain the scrub sponge.
