Method for distilling myricetin from plant

This invention discloses a method for extracting myricetin from Mirica rubra bark or Ampelopsis grossedentata. The method comprises: (1) extracting Mirica rubra bark or Ampelopsis grossedentata with ethanol; (2) extracting with a medium polarity organic solvent; (3) adsorbing crude myricetin by polyamide or polar macroporous resin, eluting and separating to obtain the final product. The method has such advantages as high yield, simple separation and high product purity (greater than or equal to 80%), and is suitable for mass product.