The invention discloses a method for extracting and purifying 
flavones from plants containing 
flavones, and relates to extraction of bioflavonoids. The method is used for effectively extracting and purifying 
flavones from plants containing flavones, and has the advantages of simple extraction and purification process, low 
energy consumption, short time, high 
recovery rate of the flavones, clean and 
pollution-free production process, and high product purity. The method comprises the following steps: 1, crushing the plants containing flavones, adding the obtained 
plant powder into an 
ethanol-water solution containing a surfactant, and immersing to obtain a mixture; 2, carrying out 
microwave treatment on the mixture in a 
microwave device, taking out the 
microwave treated mixture, cooling to 
room temperature, and carrying out reduced pressure pumping 
filtration to obtain a filtrate containing flavones; 3, carrying out evaporative concentration on the filtrate containing flavones, carrying out 
macro-porous resin adsorption, and eluting to obtain an eluate; and 4, carrying out evaporative concentration on the eluate to obtain a concentrate liquid, and freeze-
drying the concentrate liquid to obtain the flavones.