Method for extracting ganoderma lucidum extract and application of method

The invention discloses a method for extracting a ganoderma lucidum extract and application of the method. The method comprises the following steps: placing ganoderma lucidum fruiting body in an extraction tank; adding a certain amount of ethanol; heating to boil for two hours to obtain decoction; filtering the decoction through a sieve mesh to obtain filtrate and filter residue; pumping the filtrate into a liquid storage tank; adding ethanol with the same volume as above into the filter residue and repeating the operation above for one time; repeating the operation above on the filter residue with a certain amount of water for two times; mixing filtrate from 4-time operation to obtain extract liquid; concentrating the extract liquid to obtain concentrated liquid with the relative density of 1.04 plus or minus 0.1; and filtering the concentrated liquid through the sieve mesh and then performing pressure reducing concentration to obtain clear cream with density of 0.5-1.5, namely, the ganoderma lucidum extract