Abstract: 【OBJECTIVE】The optimization of combined hot-air and microwave vacuum drying technology for Tremella fuciformis was studied.【METHOD】Using shrinkage ratio, rehydration ratio, sensory quality of dried Tremella fuciformis and unit energy consumption as evaluation indexes, the effect of hot-air temperature, conversed moisture content and microwave intensity on the quality of dried Tremella fuciformis and energy consumption of drying were studied; and the better technology of combined hot-air and microwave vacuum drying for Tremella fuciformis was compared with hot-air drying and microwave vacuum drying.【RESULTS】When hot-air temperature was 70℃, conversed moisture content was 30%, and microwave intensity was 5W/g,dried Tremella fuciformis of the optimal quality was abstained, and unit energy consumption was lowest, close to microwave vacuum drying's.【CONCLUSION】Combined hot-air and microwave vacuum drying could greatly improve the quality of Tremella fuciformis and reduce the energy consumption; these optimal technology parameters could afford theoretical foundation for industrial application of combined hot-air and microwave vacuum drying technique of Tremella fuciformis.