Remedies for allergic diseases obtained by mixing shoots of plants belonging to the family Pinaceae with water and saccharides followed by spontaneous fermentation. As the plants belonging to the family Pinaceae, it is preferable to use plants belonging to the genus Pinus. These remedies, which enable complete recovery in a short administration time without showing any side effects, are useful as remedies for allergic diseases, in particular, asthma and atopic dermatitis. Also, a yeast isolated from these remedies for allergic diseases is provided.