There are many reasons for the dampness on both sides of the thighs of women, such as physiological reasons, ringworm, eczema, contact dermatitis, vaginitis and so on. 1. Physiological reasons: for example, hot weather, obesity, easy to cause excessive sweating in the perineum, causing the phenomenon of female thighs moist. 2. Ringworm: fungal infection causes superficial skin inflammatory reaction in the groin, perineum and other skin mucosa, which may cause localized erythema, desquamation, itching, or blisters, pustules, oozing, and the exudate will lead to dampness on both sides of the thighs of women. 3. Eczema: internal and external factors cause inflammatory skin reactions, acute eczema can cause skin blisters, pimples, itching, oozing and other symptoms, which can lead to moisture on both sides of the thighs of women. 4. contact dermatitis: local skin contact with external sensitizing substances, caused by contact dermatitis, resulting in skin erythema, blisters, oozing, may also cause women’s thighs moist, accompanied by itching and other symptoms. Women’s thighs moist, there may be other reasons, need to go to the hospital in time for examination, under the guidance of the doctor on the cause of treatment.