Abstract: Fresh bean curd residue has high water content，rich nutrition and its deterioration is extremely easy as it is a good habitat for microorganism.Bean curd residue is rich in resources，but the pity is that it is feed，fertilizer or be abandoned.Four different drying technologies such as natural drying，electric drum wind drying，vacuum drying，and vacuum freeze drying were described.The best drying method was gained by comparing with sensory quality of dry bean curd residue powder.After crushing，bean curd residue powder can be used as food ingredients or food additives.