Abstract: A strain of Lactobacillus crispatus KBL693 and the use thereof are disclosed. The strain of Lactobacillus crispatus KBL693 (Accession No. KCTC 13519BP) attenuates allergic reactions of cells, significantly improves symptoms of atopic dermatitis, and exhibits anti-inflammatory and anti-fungal effects. Thus, the single strain alone can achieve all the purposes of alleviating atopic dermatitis and other allergic diseases and improving inflammatory diseases and autoimmune diseases, thereby finding advantageous applications as a probiotic substance. In addition, the strain, based on the anti-fungal activity thereof, can be advantageously utilized in a skin external preparation against various skin diseases caused by fungi, and in a cosmetic composition and a functional patch for alleviating sensitive skin.