Extraction method of phellinus igniarius flavone

The invention discloses a phellinus igniarius flavone extraction method, which comprises: (1) drying phellinus igniarius mycelium, and crushing to obtain phellinus igniarius mycelium dry powder; (2) extracting the phellinus igniarius mycelium dry powder at least once by using a 55-85% ethanol solution to obtain an extracting solution, and the specific conditions of each extraction are as follows: the concentration of the ethanol solution is 60-80%; the material-liquid ratio is 1: (10-20); the extraction temperature is 60-80 DEG C; the extraction time is 2.5 to 3.5 hours; and (3) concentrating and drying the extracting solution to obtain the phellinus igniarius flavone extract. According to the extraction method, the flavone can be effectively extracted from the phellinus igniarius mycelium, the extraction efficiency is high, the yield is high, and the purity of the extract is high and can reach 19.95 mg/g. According to the invention, an HPLC (High Performance Liquid Chromatography) technology is adopted, flav