The invention discloses a wet and dry dual-use permanent magnetic separator. The wet and dry dual-use permanent magnetic separator comprises a rack, a magnetic separating barrel, at least two magneticsystems, a drive slewing device, a driven slewing supporting device, a drive device, a feeding hole, a feeding device, a material distributing box, at least two groups of material distributing slots,at least two non-magnetic product receiving hoppers, at least two magnetic receiving hoppers, at least two magnetic separating regions, a slag isolating sieve, a vibrator, at least one layer of magnetism gathering media, at least two ore discharging bars and at least two rinsing water tubes. According to the wet and dry dual-use permanent magnetic separator disclosed by the invention, the effective range of magnetism is sufficiently utilized, so that processing capacity of magnetic-separating pre-selecting equipment is increased; range of processing granularity is expanded; a wet and dry dual-use separating environment is adapted; the structure is compact; the cost is reduced; energy conservation and environment protection are achieved; and product quality of magnetic products is improved.