An extraction method for anthocyanidins from cowberry is provided, which is suitable for industrialized production and relates to an extraction method for effective components of natural plant, wherein the method includes the following procedures that: the pretreatment is carried out firstly, in which the cowberry is compressed, the juice obtained from compression is put into a condensation pot to be condensed with the Baume degree arriving at 10, then elution is carried out and the condensed juice passes through a plurality of absorbent columns successively until the juice becomes colorless,then 10-30 percent ethanol is used for the secondary elution, then the ethanol is recovered and juice is dried with spray drying technology. The technical procedures of the present invention are not only simple with low cost, but also healthy without pollution, thereby being suitable of large-scale industrialized production and capable of meeting the requirement of environmental protection the business at present.