The present invention relates to a method for producing fermented edible plants or edible animal/plants, to fermented edible plants or edible animal/plants produced by same, and to foods containing same. The method for producing fermented edible plants or edible animal/plants includes the steps of: producing crushed edible plants or edible animal/plants; culturing a liquid mixture of grains, saccharides, filamentous fungi, and yeast for 24 to 36 hours to produce a mixed microbial broth; inoculating the edible plants or edible animal/plants with the mixed microbial broth, and firstly fermenting the edible plants or edible animal/plants for 3 to 8 days to produce first fermented edible plants or edible animal/plants; and inoculating the first fermented edible plants or edible animal/plants with bacteria, and secondly fermenting the first fermented edible plants or edible animal/plants for 6 to 12 days to produce second fermented edible plants or edible animal/plants. Whereby, a fermentation period can be shortened, and food deterioration and the growth of pathogenic microorganisms can be suppressed. Further, adding the fermented edible plants or edible animal/plants produced by the above-described method into foods can provide storage stability, increase bioavailability, and improve flavor.