The invention discloses a method for producing ganoderma lucidum triterpenes through ganoderma lucidum stain liquid fermentation. The method comprises the following steps: inoculating ganoderma lucidum to a seed culture medium for culture, then inoculating the ganoderma lucidum to a fermentation culture medium for fermentation culture and extracting ganoderma lucidum triterpenes from fermentation liquid, wherein according to the fermentation culture medium, wort is used as a carbon source, yeast extract powder is used as a nitrogen source, the wort accounts for 2-5 weight percent and the yeast extract powder accounts for 0.8-2.8 weight percent. According to the method provided by the invention, a culture medium using the wort as the carbon source and the yeast extract powder as the nitrogen source is used as the fermentation culture medium for culture of ganoderma lucidum thalluses, so that optimization and maximization of ganoderma lucidum mycelium yield can be realized, meanwhile, as many as possible active substances can be obtained, the yield of ganoderma lucidum triterpenes and polysaccharide in the fermentation liquid is increased obviously and industrial production of ganoderma lucidum triterpenes is facilitated.