Abstract: Drying is an important technology in processing and storage of agricultural products.Microwave drying of agricultural products has advantages of fast drying rate and less nutrient loss.However，due to poor uniformity of microwave drying，material edge overheating and sharp corner coking are inevitably caused.Combination of microwave and other drying methods can be used to solve this problem.Theory of microwave drying were briefly summarized.Characteristics and research progress of microwave combined drying technology such as microwave combined with hot air，fluidized bed，heat pump，vacuum，vacuum freezing from domestic and abroad were analyzed.Existing problems and development trend were discussed.A reference for further research of microwave combined drying technology in field of agricultural products were provided.