The invention relates to a method for extracting salidroside from rhodiola rosea. The method comprises the following treatment steps: by taking natural rhodiola rosea as a raw material, drying, grinding, allowing the rhodiola rosea to pass through a sieve with the granularity of 80 meshes, thereby obtaining rhodiola rosea powder; performing bio-enzyme enzymolysis; performing microwave assisted extraction; purifying through a macroporous resin; and crystallizing. According to the method disclosed by the invention, the rhodiola rosea is taken as the raw material, bio-enzyme enzymolysis is combined with microwave extraction, and cell walls of plants are destroyed, so that active ingredients in the cells are fully dissolved out, the extraction rate of the active ingredients is increased, and the method has the advantages of mild reaction conditions, high speed, low energy consumption, high quality, time conservation, no pollution and the like. Moreover, the microwave assisted extraction mode has the advantage that the content of protein impurities in the extracting solution is low and is suitable for industrial production.