Watery skin eruption on fingers may be caused by trauma, ringworm, eczema and other factors. 1. Trauma: If the finger has been traumatized before and is not properly treated, infection may occur, resulting in localized skin eruption, or even pus, ulceration and so on. 2. Ringworm: if the finger has fungal infection caused by ringworm, there may be small blisters, blisters will flow out after the blisters are broken, and after tearing off the wall of the blisters, it will show bright red vesicles. 3. eczema: eczema is a skin inflammatory reaction, acute stage, the local skin will generally appear erythema, edema, vesicles and other symptoms, and there will be a lot of exudate. If there are symptoms of hand skin erosion, water, it is recommended that patients seek medical attention in a timely manner, after a clear diagnosis, under the guidance of the doctor to actively treat, so as not to delay the condition.