The invention provides a special general polymer material for machine cleaning and a preparation method thereof. The special general polymer material comprises, by weight, 100 parts of modified polymer alloys, 0.5-1 part of thermoplastic plastic initiator, 0.5-1.5 parts of surface active agents, 0.5-1.5 parts of cleaning agents and 0.5-1.5 parts of silicon oil. The modified polymer alloys comprise, by weight, 40-60% of high-density polyethylene, 20-40% of polymethyl methacrylate and 10-20% of calcium carbonate filling. The special general polymer material has the advantages of being high in machine cleaning efficiency, environmentally friendly, safe, high in generality and easy to use, store and transport.