The present invention relates to a method for fermenting natural products with salt and fermented extracts prepared thereby. The method comprises: adding a predetermined amount of salt to at least one of natural products, including medicinal herbs and cereals； naturally fermenting the salted material； and extracting the fermented salted material with a solvent. Accordingly, the method can prevent the growth of various bacteria, including putrefactive bacteria, E. coli and anaerobic bacteria, which are harmful to the human body, in the natural product, and it also can prevent the generation of bed smells in the natural product. The fermented extract prepared by the method has fewer side effects and is safer than fermented extracts prepared by conventional fermentation methods.
