Abstract:Rose polysaccharides were extracted from rose by microwave-assisted extraction. The experiment factors and levels were firstly selected by single-factor test. Orthogonal design method was used to study the ef－ fect of extraction time，microwave power and ratio of water to rose on extraction percentage of rose polysaccha－ rides．The optimal conditions were determined by using the yield of rose polysaccharides as indexes，and the re－ sult of microwave assisted extraction was compared with that of traditional hot water extraction. The optimal ratio of water to rose， microwave power， time for the extraction of rose polysaccharides were 1 ∶ 30 （g/mL）， 800 W and 4 min. Under this condition，the polysaccharide yield was 2.16 %. Compared with that of hot water extraction method，microwave -assisted extraction exhibited the advantage of higher extraction rate，and less extraction time. This technology can be used in the extraction of rose polysaccharides.